Google Translate and Google Photos are good examples, but YouTube Recommendations is absolute garbage in my experience. Heck, I'm not even sure it's using any sort of AI because it seems to mostly want to funnel me to the currently most popular videos, not anything similar to the things I actually watch. I mean, it'll recommend new videos from the channels I'm subscribed to, but almost everything else is music videos in languages I don't speak, sports clips when I don't watch any sports, local news from countries I don't live in, and videos from channels like the Paul brothers, which I abhor.
No matter how many recommendations I click "Not interested" or "Don't recommend channel" on, there's still an endless list of completely irrelevant, unwanted content and channels.