Each bet is not independent of each other. Each bet is determined by a algorithm where a nonce is incremented each bet. Which means each bet is dependent on all previous bets, since the bet with nonce=10 would never exist without the previous 9 nonces.
The algorithms that determine the outcome are pseudo random and not truly random.
thank you for that and Chapeau!
there will be many user who will disagree with you but a few will understand the point you made