So I would recommend Qbittorent combined with gluetun and your VPN of choice, I personally use ProtonVPN for my Linux ISO stack simply because it still has a form of port forwarding(NAT-PMP) which I can combine with scripts to get it port forwarded. However besides that I used to use mullvad and it worked great and can highly recommend although it is a bit more on the expensive side(both mullvad and protonVPN are, mullvad being 5 euro per month, proton being 10 euros if you pay monthly 6 if you pay yearly, 5 if you pay for 2 years).

I use these because they have a reputation for being less shady than other VPN companies like NordVPN/Express/(Insert other VPN that sponsors every youtuber under the sun). But it will depend on what you want and what you are willing to spend.