I personally tend to own two Phones. One all-day carry GrapheneOS device (Pixel 8) and an older WiFi and at home only iPhone for all payment and ensurance stuff. This is inconvenient in some ways, but at least it is sort of privacy as good as it gets while still being able to run official apps when I need them at home. To de-google the phone, I use F-Droid as primary App store, Aurora as fallback for non-f-droid Apps…
Also, the desktop client on Linux is quite useful.
Alternatives for Windows etc. are Cruiser Maps, a Java application (and also available as an Android app).