You can download from this site which comes from Proton directly, this Github repo, or this link which downloads the F-Droid build

After using Autotiling from the Cosmic desktop, I can’t go back to anything else. I’ve tried distro hopping to Gnome based desktops for a few reasons, but always wind back up on Cosmic.

Proton Pass can also be downloaded from Obtainium, if you’d rather go that route.

Like everyone else in this thread, I would strongly recommend GrapheneOS.

To give you a specific phone recommendation, I would suggest the Pixel 9a. At $500 before any discounts, it’s the best value per dollar for a privacy oriented phone. Because it just came out earlier this year, it will also be receiving security updates for years into the future.