I used to use DuckDuckGo, until I realized I was using "!g" far too often.

Then I tried Kagi, and I find that works the majority of the time, including their AI. Someone else in the comments here said Kagi's AI models are bad, but I don't think they are for answering the fairly basic questions that I typically search. I'm not going to have Kagi's AI model refactor code or something though.