Game Controller Asset for controlling my card board mobile!?

Hello,
I created a presentation with Unity. It all works out fine.

Now I want to bring the presentation with a mobile phone on a CardBoard. That works fine, too. Which doesn't work: The control of the presentation at mobile phone with the Game Controller NES30 Pro Game Controller used by me.The presentation cannot be controlled.

Do you have any idea how I manage to control the game? Perhaps best with an asset - because unfortunately I can't program.
Or do you have another idea?! That would be klasse´. . .

Kind regards, JS