I have it running for a couple of months now, doing just fine. Had to change my compose file a while back due to some change but rock solid so far.
I do run Syncthing too in any case
Yeah, it is (website). OSM relies on the community and it’s very common stuff is missing. I’ve started editing there exactly 2 weeks and added a lot of POIs on my city.
If you wanna have a headstart in contributing to OSM, you can check out their wiki or you could use a app like StreetComplete that brings some gamifying aspects by sending out quests.