Well i normally gamble in sports. My strategy is pretty simple I don't know about other sports betting sites i use sportsbet.io in that it is allowed to place a bet during the match. I place a bet when the match is about to end so that really reduces the risk. I have lost only 2 times with this method out of 10 times. But one of the loss was everything which was 50$. But till date i think i have lost 300$ in gambling.