I think a lot of this is personalization-related, too. I primarily use Bing for the rewards points. If I can't find it on Bing, only very seldom do I find it on Google.

But I've noticed on my work computer where I rarely use the browser, results are absolutely atrocious. But that's true for both.

But beyond that, I think search engine quality for anything but the top 100 websites has declined dramatically over the past ten years. Google has straight up delisted websites I used to visit that still exist, seemingly simply based on age.