no one can guarantee a safe method in playing gambling. because gambling has only two choices, win or lose. if we do not dare to take risks then do not play gambling.
indeed nobody , but people keep seeking for this safe method . as they are keep wondering too on how they can win a game with lower risk but earned profit with high chance , this sounds like selfish isn't it?
that is what a greedy people do , they want to take no risk but wants easy money.