Now might be a great time to join the Fediverse alternative FunkWhale. I've already built up a collection of nearly 10,000 songs on mine, almost all of which i downloaded from deezer.
Deezer is a streaming service like Spotify. Unlike Spotify, you can download directly from Deezer using piracy tools such as Deezloader. The user then presumably uploaded these to FunkWhale, so as to own their own local collection.
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.
Have you given funkwhale a try? I used to host subsonic years ago but i dropped it at some point, started my collection back up after i found out about funkwhale, It also has support for subsonic clients although i havent personally tried that myself yet.
Not personally, but I have seen it. I just have so much stuff I never found the need to have other people to connect with for stuff I am missing so it didn't seem worth it. The only stuff I find I want is stuff that's new release and get it within a few weeks when I have time.
I use navidrome and it uses the subsonic API so I'm guessing funkwhale should still work with it but I never looked into it. I host for myself really, my wife, father, and a few friends will use it from sparingly.