ターミナルからHomebrewをインストール後、$ which brewと検索してもcommand not foundと表示される

前提・実現したいこと

下記記事を参考にターミナルからHomebrewをインストールしたのですが、
$ which brewと検索してもcommand not foundと表示されます。

↓参考にした記事
https://qiita.com/yoshizaki_kkgk/items/4663148a2b3ca078ddbc

そもそもHomebrew自体がダウンロードできていないのが、
私のターミナルでは上記コマンドが作動しないのか、
なぜcommand not foundと表示されるのかを明らかにしたいです。

発生している問題・エラーメッセージ

-bash: $: command not found

該当のソースコード

Last login: Fri Jul  6 00:28:59 on ttys000
surfer-172-20-1-123-hotspot:~ yono$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew

Press RETURN to continue or any other key to abort
==> /usr/bin/sudo /bin/mkdir -p /Library/Caches/Homebrew
Password:
==> /usr/bin/sudo /bin/chmod g+rwx /Library/Caches/Homebrew
==> /usr/bin/sudo /usr/sbin/chown yono /Library/Caches/Homebrew
==> Downloading and installing Homebrew...
remote: Counting objects: 15, done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 15 (delta 8), reused 15 (delta 8), pack-reused 0
Unpacking objects: 100% (15/15), done.
From https://github.com/Homebrew/brew
   adcef59bd..9fff17784  master     -> origin/master
HEAD is now at 9fff17784 Merge pull request #4430 from MikeMcQuaid/handle-build-dep-reqs
==> Cleaning up /Library/Caches/Homebrew...
==> Migrating /Library/Caches/Homebrew to /Users/yono/Library/Caches/Homebrew...
==> Deleting /Library/Caches/Homebrew...
Already up-to-date.
==> Installation successful!

==> Homebrew has enabled anonymous aggregate user behaviour analytics.
Read the analytics documentation (and how to opt-out) here:
  https://docs.brew.sh/Analytics.html

==> Next steps:
- Run `brew help` to get started
- Further documentation: 
    https://docs.brew.sh
surfer-172-20-1-123-hotspot:~ yono$ $ which brew
-bash: $: command not found
surfer-172-20-1-123-hotspot:~ yono$ 
surfer-172-20-1-123-hotspot:~ yono$ $ brew install python3
-bash: $: command not found
surfer-172-20-1-123-hotspot:~ yono$ $ which brew
-bash: $: command not found
surfer-172-20-1-123-hotspot:~ yono$