I am still using private bitorrent sites for my music. Use Navidrome which seems to be the best alternative to the abandoned subsonic app and been collecting since 2005. I am somewhere near 300k in songs at this point. I tried Spotify once when I got 6 months free and found I was just to used to my way of discovering new music that I kind of hated how Spotify tried to do it.
I keep having hope that someone continues to improve the few apps we have left dedicated to personal music libraries otherwise one day I may have to switch.