I've been using Kagi for the past two months. Honestly, I'm pretty happy with it and I can't think of any major misses in terms of search accuracy. I think it's very difficult to get out of the mindset that search should be free, but I'm trying to put my money where my mouth is as it were, to try to support adtech free services.
Another lurker here, but somehow it feels like it has been a lot easier to post on here compared to reddit. Hopefully Lemmy continues to have good discussion without devolving too much into reddit meme comment chains and the like.