I keep getting redirected to bing as a search engine from Google

You have adware/malware installed. Use  Malwarebytes Anti-Malware for Mac. It may be necessary to run more than one scan. After scanning a couple of times, restart the computer and test. If necessary, follow the manual instructions.  Do not download any other programs that are listed in the articles.   Malwarebytes uninstall

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

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

If your using Safari follow:

Go to the top left corner click 'Safari > Preferences' in the new window click 'Search' then make sure 'Search engine' set to Google.