do you suggest to change the training too, in my eyes it is unrealistic how fast players at pro level increase here ;) And that must playr literally don't do anything at training.
Nope, I think that training in general is pretty solid. Why do you ask? This thread is actually about free throws and the impracticable, or in many cases, impossible rate in which they are missed.
But while we're asking questions, do you feel that players who miss thousands of free throws in a row is acceptable? How about a player with 20 jump shot who misses thousands of free throws in a row? That can't be preferable for people.
And of course training speeds are unrealistic. But it's for the better of the game that way. I wouldn't want to sit around waiting 18 real years for my players to acquire decent skill sets.