I intend to learn how to fly RC fixed-wing planes (I have previously worked on semi-autonomous aircraft, but had never learned how to fly RC planes). However, I currently live in a small place where there are no suitable places for flying planes (due to population density, lack of facilities, and laws). There are no "empty places" in the entire country. For now, I will be satisfied with flying in a simulator, leaving real-life practice for the future. I don't mind buying the RC remote control. What kind of simulator should I get? Is there any criteria I should use to find a suitable simulator for fixed-wing RC aircraft?
My go-to simulator is the free CurryKitten FPV Sim, but I’m biased as I helped with the asset design.
Another good option is RC Plane 3 on Steam, and it’s also free!
To control it, it’s recommended you get a hobby-grade transmitter. Most of these can simply plug into the computer and function as a joystick, though depending on the program you use you may have to map the axes.
I've enjoyed the Great Planes RealFlight simulator for a number of years. It has lasted well and I like the included transmitter controller. It is not free nor cheap, but it will save you a lot more in RC models that you can bring home from the flying field ready to fly again (i.e. it will save you many crashes).