Since F-droid lacks official Proton apps, I ended up using F-droid to install Obtainium app, which allows installing apps from Proton apk or official Proton Github and keeping it up-to-date from same source. I have used these links in Obtainium:

https://proton.me/download/DriveAndroid/ProtonDrive-Android.apk

https://github.com/ProtonMail/android-mail

https://github.com/ProtonVPN/android-app

Not found Pass, so I have Pass from a F-droid directly.

OF opinion: good not to be adicted to it or to anything actually.