For the past few years Spotify’s Discover Weekly has been the main way I discover new (to me) music. Secondarily I guess just from browsing the related artists of the ones I already listen to. Looking for other strategies inside or outside of spotify.
It’s not everyone’s cup of tea, but TikTok! Once the algorithm knows you enough, you can usually get really great music recommendations on your For You Page. And sometimes, you may even get small bands/artists themselves promoting on there.