Deleting BING

 1. Remove Adware

     Run  the latest release of Malwarebytes for Mac to remove malware/adware installed on your Mac.

     For instructions:  Install Malwarebytes for Mac          Uninstall Malwarebytes for Mac

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

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

     Repeat the scan couple of times.

 2. Additional steps to take if necessary

  1. Remove unknown extensions:  Safari > Preferences > Extensions

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

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

 If necessary, follow the manual instructions.  Do not download any other programs that are listed in the articles.   

 https://www.2-spyware.com/remove-bing-redirect-virus.html

 How to get rid of Bing.com Redirect - Virus removal guide

Bing is one of four options you can use as the default search site. It's a part of Safari that can't be removed.