You see players trying so hard to focus. But I feel the mental negativity is the result, not the cause. A lot of people credit lack of practice for the problem. That is true, of course. Lack of facilities and practice time causes this, but also the motivation to practice isn t there.
Players don t know what to work on.
Also, if you re practicing an ineffective motion that doesn t work or show progress, it doesn t do a lot of good to spend hundreds of hours doing it over and over. This must be part of the problem. If there were good coaching at all levels of the game, this article would not be necessary. And since coaches have very limited time and a huge number of other things to coach, shooting gets short shrift out of necessity. I believe most free throw motions use too many upper body muscles and too few lower body muscles.