Hi, the game does have controls for desktop, web, and android devices I invite you to check "How to play" to have an idea about controls, otherwise I think controls of this games are quiet different, your ball moves forward and backward only based on your camera dircetion.
Oh, yeah my bad. The "?" button ingame explains it somewhat, not sure about "How to play" though, couldn't find it, might be me just being a blind person tho. I had thought "?" would be something else and hadn't tried it :)
With respect, this is the games page below. And when you said "I invite you to check "How to play"" I've gone looking for the exact title. My bad. Cheers.