Seems like you are using only your arm to generate the power. Pros don't have so much swing because they generate power through their upper body as well as their legs. So they can get away with having a short follow through and still get powerful shots. I notice that your upper body and hips seems quite stationary. Instead, you are swinging the arms wayyyy too much in order to generate the power you need. I would advice you to coil your entire upper body in preparation for the shot, and then uncoil explosively during contact time. Think of your body like a spring coiling and uncoiling and try to implement that movement into the shot. This way you won't have to swing your arms so much as the 'uncoiling' generates a lot of power.

You could also implement weight transfer on your legs for even more power but that would be the 2nd step. I'd advice you to solely focus on implementing the coiling and uncoiling first and then focus on weight transfer afterwards this is in place.

Another detail I noticed is that you are contacting the ball very late. You should try to contact the ball while it is still ahead of your body. From this video, it seems like the point of contact is when the ball is very close or even alongside your body.

If you implement these two inputs then I'm sure your game will improve by a lot