It all depends. I have no trouble, and fly quads, very fast planes, 3d helis. But I have very good hand eye coordination and was doing this since I was 11... And now 64. Flying stuff and building/understanding it all inc designing jets etc, even building gas turbines and pulse jets before these things were buyable, from scratch was what I did for 53 years!
So the skills you can learn. The flying skills you can even learn on a flight sim. Inc quads. And the hand/eye coordination is down to genetics and injury.
Things like the DJI quads, dont need any skills at all. All gyros and self stable. Auto flight. Auto return to home. And auto land. And even auto avoid all objects on their own pretty much. They have 360 degrees eyes!
So a DJI 4 MINI for e,g doesent need any special training, licences etc and is below the 250g limit for flying over towns, people etc. too. Does 4k video. So start there! You can fly that with 1 finger.