First of all, It would be really hard for you to win if you don't have any background on the sports that you want to bet. One of the best key for us to win in betting on sports we should have enough background on the team that are playing and also having a background check on the team will help you a lot to analyze on what or where team you will bet, and also for me there is some luck on the betting sides because luck gives us the impossible outcome of the game.