Free and Open Source Software

So I'm looking to disconnect myself from Google and their tracking (as much as possible) and I was thinking about installing GrapheneOS on my Pixel phone. I mostly use my phone for Lemmy, Signal, NewPipe and taking photos. The last one is my biggest bother at the moment. The Google Photos environment is so convenient - I take a photo, it uploads it to my Google Photos collection, and after a while, it deletes it from my phone to clear space, keeping only the cloud backup. Is there a functionality like this disconnected from Google that I would be able to implement on my GrapheneOS phone? I'm looking to invest in the Proton environment (mainly Mail and Drive) so I could use that for storage. Cheers