FWIW, I’m looking at ivpn as a potential replacement for mullvad. Haven’t done thorough research on the company yet but I’m impressed by their website.

Airvpn also seems good, but the people running it are much more anonymous so it feels more difficult (for me) to trust them. But if they’re really privacy activists then it’s understandable.

Can’t you just bind qbittorrent to the VPN?