【籃球】射波有側旋，點改

射波時，要用母指、食指、中指發力，唔好用無名指and尾指，仲要姿勢正確

This mean that u are actually throwing the ball instead of shooting the ball, I had this problem be4. Firstly, u shoot the balls using u fingers and wrists, but not ur palms, the hand posture is important, u hand should like a dead duck after shooting the ball. Practise more, u don't try do get the ball in at first, but the correct way to shoot is more important.
Hope csn help u !