817205 can I use sandboxed google play service instead
Yes, i recall that MicroG is not recommended as I heard that it is a worse implementation that misses a bunch of functionality that sandboxed Play has.
sensor and network but if I open it it can't see my position
Well yes, I imagine it would need the location permission to see your location.
sometimes a message pops up I should install google play services
I think I remember a change being made so Google Maps require Play services, but I might be mixing with something else.
Should I maybe just install all of the GApps as I use a lot of google services
You could always just create a dedicated Google profile with sandboxed Play in it.