title_body: Free simulators to use when actual RC flying is not possible
upvoted_answer: For quadrotors, there are simulators for racing drones, such as the DRL one Velocidrone.
  
  For camera platform drones you have droneSimPro, Liftoff or DJI's own one. There are loads of them, and the physics engines are all improving in all. A fair few are free or very cheap or have a free version.
  
  At the other end of the scale are programs like Phoenix R/C Pro - which has models for quads, helis and fixed-wing - and to be honest, if you plan to fly in any commercial aspect, at $200 it's worth paying the money for this one.