Bing Redirect Virus on Mac

I can't figure out how to remove the Bing redirect from my usual Chrome search engine. I've done the research and all the countless steps to remove Bing and other search engines in Chrome settings and it didn't help. I also purchased and downloaded Norton Antivirus and Malwarebytes and both programs claim there is no threat on my computer, but I'm still getting redirected to Bing.

Eventually, I restored my MacBook back to the factory settings and it worked for a few weeks, then it went right back to the Bing redirect. I suspect the virus crept in again during the very narrow window before I had a chance to do the update that Apple recently released. It's driving me nuts and I am very concerned about security issues. Please help!