If the only reason you want to use soulseek is to save money, then paying for a VPN wouldn’t work out that much cheaper than Spotify premium as far as I’m aware. As you are appear rather paranoid, perhaps a modded Spotify frontend would be best.
However, a VPN isn’t really necessary for soulseek as it is ptp.
But, I would actually (obviously) recommended switching to soulseek as that allows you to build your own library of lossless audio files, which then of course involves spending large sums of money on high capacity drives but is a fun hobby to have.
Money is just small sheets of intricately designed paper or plastic. Imagine how easy it was to make counterfeits back in the days before all the technology came in
Apart from private trackers, rutracker seems to be the best for lossless movies in 1080p. Big selection of blueray remuxes/rips which are often missing from the other public indexers, likely because causal users prefer 2gb files to >20gb.
Many countries have lax, unenforced or altogether nonexistent copyright laws. Even some EU member states as far as I know don’t require VPN usage for piracy
The airvpn client feels pretty outdated compared to something like mullvad. This might not be a big deal for everyone and there are ways around it but I always see airvpn recommended but noone ever mentions this