Discuss software recommendations. I locked it as I don't want it to be messy and hard to consume. Feel free to say anything here regarding that thread.
I'm not familiar with Fairmail or k-9. Can you give a little more info on them. I think usually proton mail and tutanota are commonly advocated (https://lemmy.ml/post/2274183).
I've been degoogled for a little bit over a year now and here's what I use (disclaimer: I own a NAS / homserver, so I got a little bit more options than most people would).
Android OS: /e/OS
Browser: Firefox and Bromite
Maps: Organic Maps
Play Store: F-Droid (droidify client in my case) and App Lounge.