RE: Fustrated at trying to learn how to fly on a simulator
IMO sims are good for practicing aerobatics, and they teach you how to use your thumbs on a transmitter.
They aren't worth a darn for learning to land, and not nearly as good as an instructor. Before the sim coalition kicks in here, I said IMO.
Rudder is not required to make a good turn. Aileron and back pressure on the elevator are. I don't teach rudder until way down a students learning curve.
Go fly your trainer with your instructor.
The hobby will frustrate you unless you learn to walk before you run. Lighten up on yourself this is supposed to be fun.