It seems that everything turned into scams, aggressive self marketing and just click bait irrelevant content. I liked finance videos, but every creator sounds like "the world will end soon" or "my secret method to make 1 million per week day trading stocks/forex/crypto."
Content aimed at culture (movies/series) also behave the same way, throwing a bit of politics into the mix. Always the same incendiary click bait title spewing a bunch of nonsense that has nothing the story, setting characters or other topics relevant to the piece.
Is there anything that can be saved on that platform? It has gotten so bad that I'm start to think that Tiktok and Twitter both have better content than YouTube. At least in those platforms you can find a random dude writing an essay in a series of 20 tweets on why an increase of mantis is related to the global surge of ballpoint pen prices.
Those videos are a result of people min/maxing for the algorithm; the fact that you see them so much shows that they are unfortunately succesfull. Its a symptom of people being able to make (good) money from it.
There is still plenty of good content, but you would find it in the recommendations. You have to go searching for it. Search for your hobbies and interests. The more niche your search terms the better.