LoadError: dlopen(/Users/user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.2/lib/

bundle exec rails s を実行したところ

bundler: failed to load command: rails (/Users/user/.rbenv/versions/2.5.1/bin/rails)
LoadError: dlopen(/Users/user名/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.2/lib/mysql2/mysql2.bundle, 9): Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib
  Referenced from: /usr/local/opt/mysql@5.6/lib/libmysqlclient.18.dylib
  Reason: image not found - /Users/user名/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.2/lib/mysql2/mysql2.bundle

のエラーが発生してしまいます

関係あるかわかりませんが、brew install redisをやってからおかしくなったような気がします
半日は色々試しましたが解決できません
よろしくお願いいたします

##試したこと

###1
こちらとこちらを参考にしてmysql@5.6配下にlibmysqlclient.18.dylibが無かったため作成

mysql@5.6でlsをするとlibmysqlclient.18.dylibが確認できました

COPYING				bin				lib				my.cnf				sql-bench
INSTALL_RECEIPT.json		homebrew.mxcl.mysql@5.6.plist	libexec				scripts				support-files
README				include				libmysqlclient.18.dylib		share

しかしエラーは解決せず

###2
こちらを参考に

brew update && brew upgrade

を実行

Error: 
  homebrew-core is a shallow clone.
To `brew update`, first run:
  git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core fetch --unshallow
This command may take a few minutes to run due to the large size of the repository.
This restriction has been made on GitHub's request because updating shallow
clones is an extremely expensive operation due to the tree layout and traffic of
Homebrew/homebrew-core and Homebrew/homebrew-cask. We don't do this for you
automatically to avoid repeatedly performing an expensive unshallow operation in
CI systems (which should instead be fixed to not use shallow clones). Sorry for
the inconvenience!

解決せず

###3

こちらを参考に

brew switch openssl ~~

commandのエラーが発生します

Error: Unknown command: switch

###4
bundle doctorをやってもよく分からないものが出てきます

--- TEMPLATE END ----------------------------------------------------------------

Unfortunately, an unexpected error occurred, and Bundler cannot continue.

###5
rubyの再インストール
解決せず