Not really the same thing, but I switched from Google Drive to Syncthing. It's not as secure in terms of "chance of losing your data", but I'm replicating data on my main PC, on my phone and on my RPi Zero and this is good enough for me, at least for now. Ideally I would periodically encrypt and upload every synced folder to the cloud (just because it's encrypted), but that's for another day.
You gotta wait for overture maps alternatives. It is an open map project by the linux foundation, microsoft, tomtom and some other companies. Its main purpose is to provide a competent competitor to google maps since these companies don't want to pay google royalties for their map data. It can also help osm since it is under an open license i think. It is still in alpha though at the time of writing this...