How do top runners do table tennis so fast? the quickest i can do it always ends up with cole hitting the ball.

You can use backspin to beat the only CPU it works on, Cole. Backspin will completely foil Cole and he won't hit it back, if it's done correctly. If you look in the "Guides" section on the SRC page, there's a few All Sports tutorials that explain how to do it well.

Also, for more questions like these, I'd recommend joining the Discord (Button under the "Guides" tab), and posting in the #strats channel. You'll get a quicker response there.