Idk if this is still of interest to you but I think I know why you’re only getting 5 points: 1) if you don’t already, hold and swing the remote like an actually tennis racket. 2) if you swing early, the ball goes left. If you swing late, the ball goes right. I look at the shadow of the ball to gauge this and you can see in the video how the guy hits the ball early to make it go left and late to go right.