My idea is to not only look at the payout but at the true probability behind a game. When the actual chance of winning is higher than the odds, know that you’ve found your perfect opportunity.
It's only greedy gamblers that are only after the pay out while neglecting a key factor like the team that has the highest probability of getting a win. People have different gambling strategies, some go across different league and just check list of games which has an high percentage of giving them a win, they pick those games and just stake on them and if it's a lucky day they shine with it.
Some also choose one or two games and without considering how small the odds are they stake with an high amount and it because of the amount used, the returns makes a lot of difference. Take greed out and gamble realistically and you will experience less of losses throughout your bet, it's only when your eyes is all fixed on what you can stand to gain via just the potential returns that results in losses. Gambling is not just for the profit, gamble for fun and when you see clear chance of earning from it then you can go on to carry such bets, doing so will make you be more selective on games rather than jumping after every game that comes our way.