I too like f-droid but have found it too difficult to figure out how to publish packages for it. Last time I looked at it all the documentation covered tool chains I don't use. I see that there are Godot games on f-droid now so I hope that means there is an easy path to go from a Godot project to f-droid package. Also is there any support for PWAs on F-droid?
I had to write (heavily improve? I don't remember) the React Native guide when I release my first RN app there (non RN apps were easy). Though I assume/hope things are better now?