I have a very horrible case of this. One day at night, I slept listening to lofi playlist. The next week all my recommendations were screwed. Horrible assumption on the part of algorithm.
I didn't like it, I didn't share it, I didn't do any other thing than just stare at it in shock.
Big mistake.
For over 6 months that became +50% of my feed. Incredible and depressing amount of people monetising the disability of their friends, siblings, children, or their own. Really effed up content that makes you stop and say wtf out loud. But they also earn a living. But they should do it in a honorable manner. But maybe they don't have the chance. So I flag as not interested but that just swaps those videos with new BRAND NEW "content creators" of this kind that I hadn't yet seen. Wow thanks Instagram.
At some point they changed something in the algorithm and now those videos rarely pop anymore, and I'm wary and scroll away fast.
None of the music services seem to understand that just because you like multiple genres, that doesn't mean that you want it to randomly jump around between them without any consideration for how they flow together.