There is no guarantees that win will come, this is why we have to limit risks, sometimes I do wish I win more but for what gambling is all about I couldn't dare increase my risk.
Best approach to gambling is risking just the amount you can afford to lose. Despite the fact that a gambler can win a huge amount when they play with a big amount, they must not also forget the risk of gambling with a huge amount that they can not afford to lose. I usually prefer to gamble with just a very small amount that will not affect my mental health after I lost the bet.