Well, I’d say Proton is still better than most other options (open-source software, no ad trackers on the website and in apps). However, specifically for VPNs, I would recommend Mullvad or IVPN. If you are a bit more tech-savvy, you may also take a look at Cryptostorm. Of all three, only Mullvad is police-raid-proven to not store logs or other PII. The most important thing for me personally would be that the VPN company is not owned by a larger parent company, which in turn owns multiple different VPN providers. This alone excludes a lot of the heavily advertised providers (Private Internet Access, NordVPN, Surfshark, ExpressVPN, CyberGhost, OVPN, and probably a few more).