Redirecting to yahoo search

 1. Use  the latest release of MalwareBytes for Mac to remove malware/adware installed on your Mac.

     Install guide:       https://support.malwarebytes.com/docs/DOC-1817

     Uninstall Guide:  https://support.malwarebytes.com/docs/DOC-1190

     The installer may ask you to allow it in Security & Privacy  /System Preference. Allow it.

     Click the “Scan Now” button. Once done quit Malwarebytes for Mac.

     Restart the computer, relaunch Safari holding the shift key down.

2. Additional steps, if necessary.

 1. Remove unknown Login item.

     System Preferences > Users & Groups > Login items

     Authenticate and unlock the lock.

     Highlight the unknown login item (Mac Mechanic?) and click the “-“ button at the bottom left to remove it.   

 2. Remove unknown and third party installed extensions.  

     https://support.apple.com/guide/safari/use-safari-extensions-sfri32508/mac

 3. Reset search engine.       https://support.apple.com/guide/safari/customize-your-search-ibrwe75c2a3c/mac

 4. Reset Homepage.            https://support.apple.com/guide/safari/set-your-homepage-ibrw1020/mac

 5. Restart the computer, relaunch Safari holding the shift key down.

I would like to give you at tips for this problem follow this step

first of all you have to remove another search engine by chrome setting...

Here

1. Uninstall search.yahoo.com application using Control Panel.
2. Remove search.yahoo.com redirect from Internet Explorer.
3. Remove search.yahoo.com browser hijacker from Google Chrome.
4. Remove search.yahoo.com homepage and default search engine from Mozilla Firefox.
5. Remove search.yahoo.com redirect from Safari.
6. Remove rogue plug-ins from Microsoft Edge.

and clean your chrome browsing history with all time..

It's working for me you're getting still this issues please let me know..

All The Best

Trivanks Vinks