What is the principle of deciduous ball in football?

This is related to aerodynamics, similar to the principle of aircraft take-off. First of all, the defoliated ball generally does not rotate, and secondly, the rounded ball is not a perfect circle. When a non-rotating irregular ball flies forward, the distance of air flowing through the football is different, resulting in different pressures up and down, left and right, which will lead to the irregular trajectory of the football in the air.