I suspect the casino has a magnetic system attached to the ball which is common in most, maybe all Georgian casinos).
I know all roulette wheels have a general pattern that can be observed over time. However, to win is near impossible (I have a lot of experience in casinos and I wasted 8 days of my life here. The major ploy it uses to attract customers is you get 20% free credits on the amount you lose or win (ie no matter how much you win or lose the casino will refund or add 20% of the amount automatically on your card). Betlive is a slot casino and it capitalises on the fact that it is one of only two casinos open in Tbilisi during May 2021 (in summer other casinos might open but this is not yet confirmed).