link_to の遷移先が上手くいきません

前提・実現したいこと

現在、railsにて顧客管理のアプリを作成しているのですが、
一覧ページに遷移するリンクを押すと、他のページに遷移されてしまいます。

何卒、よろしくお願いいたします。

発生している問題・エラーメッセージ

・ヘッダーに設置した管理者画面に遷移するリンクをクリックした際に、searches/index.html.erbに遷移させたい。
(現在だとsearches/search.html.erbに遷移します)

該当のソースコード

config

ruby
1Rails.application.routes.draw do
2  get 'searches',to: "searches#search"
3  mount RailsAdmin::Engine => '/admin', as: 'rails_admin'
4  devise_for :users, controllers: {
5   omniauth_callbacks: 'users/omniauth_callbacks',
6   registrations: 'users/registrations'
7  }
8  post '/callback' => 'linebot#callback'
9  get 'homes/index'
10  resources :homes, only: [:index]
11  root to: 'home#index'
12  resources :users 
13  resources :attendances
14  resources :daytimes
15  resources :restaurants, only: [:index, :show] 
16  resources :searches do
17    collection do
18      get 'search'
19    end
20  end
21  namespace :admin do
22    resources :restaurants, only: [:index, :new, :create, :show,  :edit, :destroy]
23  end
24end
25  
26

searhes_controller

ruby
1class SearchesController < ApplicationController
2  def show
3    @search = Search.find(params[:id])
4  end
5  
6  def index
7    @search = Search.all
8  end
9  
10  def edit
11    @search = Search.find(params[:id])
12  end
13
14  def update
15    @search = Search.find(params[:id])    
16    @search.update(update_params) 
17    redirect_to root_path
18  end
19  
20  
21  def create
22    @search = Search.new(search_params)
23    @search.user_id = current_user.id
24    @search.save!
25    redirect_to root_path
26  end
27  
28  def destroy
29    search = Search.find(params[:id])    
30    search.destroy
31    redirect_to root_path
32  end  
33    
34  def search
35    if postal_code = params[:postal_code]
36      params = URI.encode_www_form({zipcode: postal_code})
37      uri = URI.parse("http://zipcloud.ibsnet.co.jp/api/search?#{params}")
38      response = Net::HTTP.get_response(uri)
39      result = JSON.parse(response.body)
40      if result["results"]
41        @zipcode = result["results"][0]["zipcode"]
42        @address1 = result["results"][0]["address1"]
43        @address2 = result["results"][0]["address2"]
44        @address3 = result["results"][0]["address3"]
45      end
46    end
47  end
48end
49
50private
51 def search_params
52  params.permit(:address1, :address2, :address3, :building_name,:phone_number, :postal_code)
53 end
54
55 def update_params
56  params.require(:search).permit(:address1, :address2, :address3, :building_name,:phone_number, :postal_code)
57 end

layouts/application.html.erb

html
1          <div class = "username">
2           <h1 class="title is-3" style="font-family: serif;">
3           <%= current_user.username %>さんのページ</h1>
4          </div>
5   <div class="navbar-end">
6            <div class="navbar-item">
7              <div class="field is-grouped">
8                <% if current_user.admin? && !(@user == current_user) %>
9                   <p class = "control">
10                   <%= link_to "管理者画面", searches_path, class: "button is-warning is-light" %>
11                 </p>
12               <% end %>
13                <p class = "control">
14                  <%= link_to "マイページ", user_path(current_user), class: "button is-warning is-light" %>
15                </p>
16                <p class = "control">
17                  <%= link_to  "ログアウト", destroy_user_session_path, method: :delete, class: "button is-warning is-light" %>
18                </p>
19              </div>
20            </div>
21          </div>
22        </div>
23<% else %>

rails routes

routes
1search_searches GET      /searches/search(.:format)                                                               searches#search
2                                      GET      /searches(.:format)                                                                      searches#index
3                                      POST     /searches(.:format)                                                                      searches#create
4                           new_search GET      /searches/new(.:format)                                                                  searches#new
5                          edit_search GET      /searches/:id/edit(.:format)                                                             searches#edit
6                               search GET      /searches/:id(.:format)                                                                  searches#show
7                                      PATCH    /searches/:id(.:format)                                                                  searches#update
8                                      PUT      /searches/:id(.:format)                                                                  searches#update
9                                      DELETE   /searches/:id(.:format)                                                                  searches#destroy
10