alt Hacker NewsProtonVPN with bitcoin which you get from a monero swap is a good idea for complete privacy if you want port forwarding.
MullvadVPN is also another great one.
I have heard some good things about AirVPN, but I can absolutely attest for mullvad and to a degree ProtonVPN (Just with Proton, depending upon your threat model, do make the necessary precautions like buying with monero for example)
There are others, but mostly its the 2-3 that I trust.
How do you square "complete privacy" with the fact that you're authenticating to these VPNs with a persistent username or other credential and are then sending traffic through them, both from an IP address that might identify you, and to services that you authenticate against?
Best case, the VPN learns your residential IP and the names of every HTTPS host you connect to (if not your entire DNS traffic as well); worst case, they collude with any of the services you use (or some ad tracker they embed) and persistently deanonymize your account.
VPNs are structurally not great for privacy.