Monthly bonus takes into account several criteria, such as your VIP rank, your wagered amount in the past 30 days (or from one monthly to another). Also, your profit values for the month and house edge of the games you're playing play a part as well.

Martingale. The first and one of the most well-known sports betting and casino strategies on how to win is the martingale system. In its basic variant, each time you lose a bet, you should wager double on the next match. This way, whenever you win, you cover all your previous losses and gain money for the next bet.