Google search is completely broken IMO. I stopped using Google search years ago and every time I go back on the off chance that it's bigger index has something that DuckDuckGo couldn't find for me.
Image search isn't great either but it still often gives me something close and that usually satisfies my image searching needs.
I still find YouTube recommendations quite good for me, but there are occasional ones I've watched already. I still go down its fun (and educational!) rabbit holes all the time.
Exact same experience, YouTube recommendations (in incognito without being logged in!) usually give me stuff related to the video in watching.
However when they don't, it's invariably to push some alt-right slop down my throat. Video is about a comedian? Suggestion "feminist woke takedown compilation". Video about news? Suggestion "$european_far_right_party's channel says gypsies are subhuman". Video about economics? Suggestion is Jordan Peterson ranting about something. And so on and so on. It's pretty tiring.
Image search isn't great either but it still often gives me something close and that usually satisfies my image searching needs.
I still find YouTube recommendations quite good for me, but there are occasional ones I've watched already. I still go down its fun (and educational!) rabbit holes all the time.