I would like to run a flight simulator and create aircraft/drones

I am a for-real pilot and I do use X Plane as a flight simulator. However, I just started working with the unreal engine and I would like to find some tutorials about creating aircraft (perhaps with mathematics or with matlab) and then running them in the simulator, if possible, using real geography, like one can with X Plane or other flight simulators. I don’t know if that is a lot to ask but I need to start somewhere and tutorials would be the place.

Thank You
Tom