A major mistake that we often see (especially with younger shooters) is the shooting elbow is too low upon release of the shot. If your release is too low the trajectory (arc) of your shot will be too flat and give the ball less of a “Sweet spot” to go through the hoop. Think about if there was a camera in the ball. At a lower trajectory the hoop would look like a very thin oval, giving the ball a very small area to pass through. With a higher trajectory there will be more target area and the hoop would look more like a squished circle with a larger “sweet spot”.
So what do you do? Studies have shown that the optimal angle of release is about 45-48 degrees. If your shooting elbow finishes above your eye that will give you optimal arc on your release. So just remember “elbow above eye” every time you shoot!