Did you by use a simulator to learn the skills needed to fly in manual mode. Or did you learn by just doing it and if a simulator was used to learn your skills which did you choose and why?
The only sim I've used was Realflight back in the day. I would think with flying in Manual mode that it would almost require a pinch grip on the sticks as to flying thumbs only (which is how I've flown my entire life).
I had never flown FPV before. Tried a sim, crashed, a lot. Realised I needed to practice MUCH more using a sim before I crashed the real drone! Tried Lift-off, then found Drone League Racing, which was much better for a complete beginner. Slowly getting better. One day I will be confident to fly and it will have been cheap learning