Try hard to train at a place that has a fixed base (lower cost) simulator available. Sometimes instructors don't like to use these because instructing in them doesn't add to their flight time for their ATP, sometimes they are paid less. Optimally get a retired airline or military pilot as an instructor.

Optimally, read about the lesson beforehand. Then discuss the lesson with the instructor to be sure that what you think you learned from reading is fact. Then fly the lesson in the simulator. The simulator can repeat lessons that you are weak on till you get it right. Only then take that lesson to the airplane where you can get the context that only the airplane operating in the real world can give.