Hey there. To be honest, I'm not really familiar with Mullvad myself. But if you're looking for a good VPN with solid privacy protection, I can recommend Proton VPN.

One small catch: you do need to sign up. But, registration is free and you don't even need to provide a phone number. Plus, they are based in Switzerland, which offers strong data protection laws outside of the 5/9/14 Eyes alliances.

I use the whole Proton ecosystem, including their email service. Even with the free version, I'm satisfied. In combination with LibreWolf, this provides strong protection. Maybe you could give it a try.