I keep my options open. I default to signal or matrix if that’s available, then my fall back is iMessage which I run on a macOS vm, and finally id relent to proprietary services like discord, groupme, etc. I minimize my communications on unencrypted and non-private channels, and only talk about benign things there if I have to use them. But I don’t let my commitment to privacy completely isolate me, I know my threat model and change behaviors depending on the environment.

My banking and money transfer apps all work under grapheneos in a user account with Google play services installed. I mostly manage these things on my computer though to minimize tracking and remove the need for safetycheck compatibility before it ever comes up.

I never use these services but pretty sure they also work on Graphene with sandboxed Google play services installed

Other users have posted programs to convert these coordinates on the fly, I have never needed those personally. When I need GPS I usually go for Organic Maps but thinking of switching to OSMAnd+ soon

Yes and this is an area where I need to improve my privacy more. I just use the garmin connect app with a garmin fitness tracker I got for cheap. I think it partially supports gadgetbridge so I might look into that but haven’t had the time to investigate.

Pixel+Graphene is really the gold standard for privacy, security, and compatibility. I’ve heard ok stuff about CalyxOS so that’s worth checking out. Also FairPhone devices tend to have good support for custom ROMs like Calyx and /e/os which are degoogled, but I don’t have personal experience with those so definitely research those topics before making any decisions