You can control which direction the ball travels in the game.
You can pull your shots to the Left by letting go of your swing earlier than the exact hit timing.
You can push your shots to the Right by letting go of your swing later than the exact hit timning.
'Exact hit timing' is indicated through a bar (red-green-red) displayed right after you hit the ball.
To get a feel for how to control the ball, you'll need to get a feel for what is "early" vs. "late" by practicing your hits and observing the indicator.