Ok I see what yer saying. I musta misread it.

The only thing that shooting more balls will do is stack up more spins and flipper openings. Now when the red chance button lights up (doesn't happen often) you need to pay attention on the screen, cuz it wants you to do something interactive. There are a number of different things. You will know what to do when you see them.
But overall, enjoy those video sequences, because you are along for the ride. Nothing you do will affect the outcome.