laravel 画像表示をしたい！

laravelで画像の表示ができなくて困っています！
前回で名前を指定して保存できるようになったのですが、次は表示できないです。

やったこと
パスの確認
php artisan storage:linkの打ち込み等、色々

現在確認しているサイト
ブログ見ないで公式見るようにしてます！
https://readouble.com/laravel/7.x/ja/filesystem.html?header=%25E8%25A8%25AD%25E5%25AE%259A

model

class Book extends Model
{
    protected $fillable = [
        'title',
        'over_view'
    ];

    public function getUrlAttribute()
    {
        return url($this->baseUri, $this->filename());
    }

    public function user()
    {
        //userIdに紐づく
        return $this->belongsTo(User::class);
    }

    public function sentences()
    {
      return $this->hasMany(Sentence::class);
    }

    public function tags()
    {
        return $this->belongsToMany(Tag::class);
    }



    public function getFollowedTimeLines(Int $user_id, Array $follow_ids)
    {
      //自身とフォローしているユーザーを結合する
      $follow_ids[] = $user_id;
      return $this->whereIn('user_id', $follow_ids)->orderBy('created_at', 'DESC')->paginate(50);
    }




    public function getBook(Int $book_id)
    {
        //本id取得
        return $this->with('user')->where('id', $book_id)->first();
    }

    public function bookStore(Int $user_id, Array $data, $file_name)
    {
      $this->user_id = $user_id;
      $this->book_image =  $file_name;
      $this->title = $data['title'];
      $this->over_view = $data['over_view'];
      $this->save();
      return;
    }

    public function getEditBook(Int $user_id, Int $book_id)
    {
      return $this->where('user_id', $user_id)->where('id', $book_id)->first();
    }

    public function bookUpdate(Int $book_id, Array $data)
    {
      $this->id = $book_id;
      $this->title = $data['title'];
      $this->over_view = $data['over_view'];
      $this->update();
      return;
    }

    public function bookDestroy(Int $user_id, Int $book_id)
    {
        return $this->where('user_id',$user_id)->where('id',$book_id)->delete();
    }


    //タグ
    public function bookTagStore(Array $tag_ids){
        //attch
        foreach($tag_ids as $tag_id) {
          $this->tags()->attach($tag_id);
        }
      }

      public function bookTagSync(Array $tag_ids){
        //syncメソッドは中間テーブルに設置しておくIDの配列を渡す。https://yshrfmru.hatenablog.com/entry/2019/03/24/131219
          $this->tags()->sync($tag_ids);
      }

      public function getTabInfoList(){
        $tab_info_list = [
          'タイムライン' => [
              'param' => '',
              'icon_class' => 'fas fa-stream'
          ],
          '人気' => [
              'param' => '?mode=popular',
              'icon_class' => 'fas fa-fire'
          ],
        ];

        return $tab_info_list;
      }


}

controller

<?php

namespace App\Http\Controllers;

use App\Models\Book;
use App\Models\Sentence;
use App\Models\Tag;
use App\Models\User;
use Illuminate\Support\Facades\Validator;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;

class BooksController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index(Request $request, Book $book, Tag $tags, User $user)
    {

        $books = Book::all();
        $contents = Storage::get('public/book_image');
        var_dump($contents);

        $popular_tags = $tags->getPopularTags();
        $popular_users = $user->getPopularUsers();
        $tab_info_list = $book->getTabInfoList();

        return view('books.index',compact('books'), [
            'popular_tags' => $popular_tags,
            'popular_users' => $popular_users,
            // 'api' => $api,
            'tab_info_list' => $tab_info_list,
        ]);

    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    //ok
    public function create()
    {
        $user = auth()->user();

        return view('books.create',[
            'user' => $user,

        ]);
    }


    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request, Book $book, Tag $tag)
    {
        $user = auth()->user();
        $url = Storage::url('book_image');

        $file_name = $request->file('book_image')->getClientOriginalName();
        $request->file('book_image')->storeAs('public/book_image',$file_name);


        $data = $request->all();
        $validator = Validator::make($data,[
            'title' => ['string', 'max:30'],
            'over_view' => ['string', 'max:20480'],
            'book_image' => ['file', 'image', 'mimes:jpeg,png,jpg', 'max:20480']
        ]);
        $validator->validate();

        $book->bookStore($user->id, $data, $file_name);
        //タグ挿入
        $tag->tagStore($data["tags"]);
        //$tagテーブルに挿入した値の名前からidを取得し中間テーブルへ
        $tag_ids = $tag->getTagIds($data["tags"]);
        //中間テーブルにidを設置
        $book->bookTagSync($tag_ids);

        $book->save();

        return redirect('/books')->with('success', '投稿が完了しました。');

    }


    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show(Book $book, Sentence $sentence)
    {
        $user = auth()->user();
        $book = $book->getBook($book->id);
        // $favorite_row = $favorite->getFavoriteRow($user->id, $sentence->id);
        $sentences = $sentence->getSentence($book->id);
        return view('books.show', compact('book'),[
            'user' => $user,
            'book' => $book,
            'sentences' => $sentences,
        ]);
    }


    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit(Book $book)
    {
        $book_status_texts = $book->getPostbookStatusTexts();
        $user = auth()->user();
        $books = $book->getEditbook($user->id, $book->id);

        // if(!isset($books)) {
        //     return redirect('books');
        // }
        // $tags = [];
        // foreach($book->tags as $tag){
        //     $tags[] = $tag;
        // }
        return view('books.edit', [
            'user' => $user,
            'books' => $books,
            // 'tags'=>$tags,
            // 'book_status_texts' => $book_status_texts,
        ]);
    }


    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, Book $book, Tag $tag)
    {


        $data = $request->all();
        $validator = Validator::make($data,[
            'title' => ['string', 'max:30'],
            'over_view' => ['string', 'max:20480'],
            'book_image' => ['file', 'image', 'mimes:jpeg,png,jpg', 'max:20480']
        ]);
        $validator->validate();
        $book->bookUpdate($book->id, $data);
        return back()->with('success', '編集完了しました');
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy(Book $book, Request $request)
    {
        $user = auth()->user();
        $book->bookDestroy($user->id, $book->id);
        $redirect = $request->input('redirect');
        if ($redirect == "on") {
            return redirect('/');
          } else {
            return back();
        }
    }

}

view index


<h1>一覧画面</h1>
<p><a href="{{ route('books.create') }}">新規追加</a></p>

@if ($message = Session::get('success'))
<p>{{ $message }}</p>
@endif

<table border="1">
    <tr>
        <th>title</th>
        <th>詳細</th>
        <th>編集</th>
        <th>削除</th>
    </tr>
    @foreach ($books as $book)

    <img  src="{{ asset('public/book_image' . $book->book_image) }}" alt="{{ $book->book_image }}" width="100px" class="w-100">

    <tr>
        <td>{{ $book->title }}</td>
        <th><a href="{{ route('books.show',$book->id)}}">詳細</a></th>
        <th><a href="{{ route('books.edit',$book->id)}}">編集</a></th>
        <th>
            <form action="{{ route('books.destroy', $book->id)}}" method="POST">
                @csrf
                @method('DELETE')
                <input type="submit" name="" value="削除">
            </form>
        </th>
    </tr>
    @endforeach
</table>

view show

<h1>詳細画面</h1>
<p><a href="{{ route('books.index')}}">一覧画面</a></p>

<table border="1">
    <tr>
        <th>id</th>
        <th>title</th>
        <th>over_view</th>
        <th>画像</th>
    </tr>
    <tr>
        <td>{{ $book->id }}</td>
        <td>{{ $book->title }}</td>
        <td>{{ $book->over_view }}</td>
        <img src="/storage{{$book->book_image}}">
        <img src="{{ URL::to('public/book_image') }}/{{ $book->book_image }}" alt="{{ $book->book_image }}" />


    </tr>
</table>
<th><a href="{{ route('sentences.create', ['id' => $book->id]) }}">コメント</a></th>
<div class="col-xs-8 col-xs-offset-2">

    @foreach($sentences as $sentence)
    <tr>
        <td>{{ $sentence->text }}</td>
    </tr>
    <form method="POST" action="{{ route('favorites.store') }}">
        @csrf

        <input type="hidden" name="sentence_id" value="{{ $sentence->id }}">
        <button>
    </form>

    @endforeach

画像の保存はバリデーション飛ばしてしまってますが、とりあえず画像表示できるようにしたいです。
どなたかご教授よろしくお願いします。