For month I use Soulseek with a vpn before I works back then and now is no longer the case even though It work If I turn off the vpn I rather be anonymous due I do not trust my ISP is there any alternatives to soulseek to download my FLACS thanks.
Just use the nicotine-plus client for soulseek instead. It's much more stable, and it's foss
You aren't going to find much that is remotely close to the selection on soulseek without getting into a private tracker of some kind that serves the sort of content you are after.
As someone else said you should probably just fix your VPN and carry on using soulseek as it really is the best option out there that is easily available.
I used Soulseek almost exclusively for around 5 years, and I found that some obscure tracks/albums (mostly metal) aren’t available as FLACs.
Now I use streamrip with a basic Tidal subscription. It costs a bit of money but it’s very fast and has everything I searched for as a FLAC.