I used to discover a lot of new music on Youtube, actually.
If you watched a music video you liked, the algorithm recommended related stuff, but also threw you a curveball with <1000 views once in a while.
I stumbled upon a lot of great bands that way.
But nowadays, 3 videos in it’ll all be AI slop, so I’m open to new ideas and willing to pay for a service, too.
I tend to follow bands and musicians I like and check out who else they play music with.
e.g. I go to their shows and if I like the the other bands playing I tend to check them out later and buy their music on Bandcamp. Then from there I’ll also follow the socials of all those bands so when they mention other bands, or if they’re going on tour with other bands, or playing music fests with other bands, then I check out those bands too.
I hate social media / Instagram but every once in a while the algorithm will mention something worth checking out, kind of rare but it happens.
Seems to work for me, if anything now I have too much music to check out and not enough time to listen to it all haha.