I guess you too. Since you are right, there is no question of skill, but of strength! ! It is the strength of the forearm and wrist, especially the wrist. It is estimated that you are still young and your upper limb strength has not improved.
It is better to practice upper limb strength with dumbbells.
Starting from 5 kg, it is feasible to hold the dumbbell in the right hand and hold it about 3 ~ 5 cm under the wrist of the right hand. Hold the dumbbell in your right hand and move up and down in a group of 10 ~ 12. After finishing one group, I feel my physical strength is restored, and then I will continue to do 3 ~ 5 groups.
After practicing for a period of time, if you feel less laborious, you can increase the number of groups and each group.
Finally, for each group, try to finish it as soon as possible. After all, the shot is the explosive force of your wrist shaking at that moment, and the ball you throw will turn accurately again! !
In fact, I only practiced the second step of three-pointers, and I can score one or two goals from time to time. The latter is my imagination. I think it should be right. Hehe, that's all. I hope it helps.