My PC has been taken over by BING, and I HATE BING! No setting tab under the 3 dots in Chrome. Search Engine set to Google, BING disabled in both Chrome and Edge, all searches default to BING. I have run several deep scans with AVG, nothing detected…
Bing is Microsoft’s own official search engine and therefore I doubt any AV would see it as malware. You can try Malwarebytes free scanner and see if that helps, a lot of us use it as a second opinion scanner.
I can’t help thinking there is a setting somewhere you are perhaps missing though.