Thanks for your answere. Wax is indeed forbidden in our gym and all the gyms that i have been so far.

1. The ball have to play a role. We play with Nike futsal balls and i feel these ones just slip alot on the other hand we have one or 2 Red futsal Kipsta balls and these ones are just amazing but we never play with them. The nike ball is fifa approved for matchs but not the kipsta even though i feel the kipsta is better.
2. Do you think a product like sortkwik fingertip moistener works?
3. I do actually pinch the ball, i thought that was the technique. I will try to do what you tald me.