They say rightly that you need to check and use only licensed ones, because it's scary to bet where you can go broke and be cheated. Speaking specifically about the official casino, the 1xbet official app is definitely the leader, it has been on the market for a long time, and everyone was happy and never had problems with bets, and no one was cheated. From my experience, I say that you need to choose everything licensed, because they were cheated very often, so be careful!