I've used ProtonVPN in the past, before it was found not to be as secure/private as they claimed. I have not tried it since before the time of the publication of the second link -
Proton Technologies has announced that it is open sourcing its VPN tool, ProtonVPN. The Swiss firm says that not only is it releasing the source code for its VPN tool on all platforms, but also that it has conducted an independent security audit. Created by CERN scientists, ProtonVPN has...
malwaretips.com
Prior to that other issues were raised about ProtonVPN -
This may all have changed now, I'm not sure, others here may know much more about the current status of ProtonVPN and be able to help you.
Personally, I don't trust them now, its that 'once bitten twice shy' attitude. It would be good if my trust could be restored, as it worked well in the past.
In case you haven't found this site I believe it to be one of the best sources of information on VPNs
A VPN expert compares & ranks the best VPN services on the market in 2021. Compare the top VPNs and find yours now.
thatoneprivacysite.net