You need a material and for that a physics material for all of your surfaces! There you can turn off friction. Set your ball’s gravity to zero and perhaps angualar and linear damping. There is also a physics component for actors, but I’m just trying that out by myself…
I’m now at the point where my ball doesn’t stop anymore and reflects relatively properly. The problem is, it gets too fast sometimes and the collision solver just gives up and my ball vanishes out of the field into the dark…