The installation was very easy! It's very greatful that my data doesn't send to Google any more.
Welcome ! Quick tip: Google has a database of cell towers that helps getting a location quickly and helps starting the GPS connection even indoors.
You don't have that on GOS. So when you use localization with organic maps, you'll notice it struggle to find you. You have to have a clear view to the sky to get a ping and then you can use it inside your car for example.
I also use https://github.com/barbeau/gpstest to get the ping more quickly.