Basketball used to spin backwards in the air when shooting, but now it doesn't spin. Is there any way to correct it?

Throw the ball with your thumb, forefinger and middle finger. Be sure to push out with your palm and use your wrist more. Now, your arm strength estimates that the arc of the ball is not high. Under normal circumstances (that is, not difficult shooting), ring finger and little finger should not be used; Pay attention to the five fingers touching the ball and the edge of the palm when lifting the ball. Never touch the palm of your hand. You might as well practice shooting outdoors. Keep your palms clean after practice.