You got to ride the youtube algo musical rabbit hole down to the bottom, otherwise it just feeds you the same 10 playlist. Find a song/band outside your norm that is tolerable, then you can choose a direction based off recommended. You can upvote what you like/the right direction to tune the algo. You should get mostly top songs from that artist or similar bubbles, although if your adventurous check smaller artist and explore. There's hidden diamonds.
Eventually you find some random anon artist with a weird cult following and what seems to be a sub-sub-sub-sub genera with artist with the same vibe. There will be bubbles of artist remixing each-other, working together, starting fights and drama, and making good shit. Follow what catches your attention and youtube will eventually lead you to the good shit of a niche. I assume most services would do the same.