ToNIX

EndeavourOS is the right answer.

Organic Maps is indeed open source and available through f-droid/GitHub/Telegram.

It’s actively developed and it’s UI is more easier to use than OSMAnd. The search accuracy is also way better than in OSMAnd, in which I often can’t find places.

OSMAnd is pretty nice, but Organic Maps is just way better IMHO.

Have you tried OnlyOffice? It’s pretty much like MS office and documents compatibility is really good.