In my opinion, high confidence also has no meaning in gambling, luck and also analysis are actually the most important factors in a bet, but sometimes we underestimate this and are more inclined to make bets blindly with the belief of winning, even from what I have seen so far, people who are overconfident will only punish themselves with painful losses in a betting, in my opinion, is better if we analyze all the factors that exist before making a bet and hope that luck will be on our side.
Here i think like you, it makes no sense to think of being confident in gambling or betting
Much depends on luck and not just of Bravura
See Texas Holdem, clearly if you are good at dealing and counting the exit cards you have an advantage
However, if the right card does not come at the right time, you will lose
That is true because if we want to betting, we must analyze each team. That is to avoid we pick a wrong team that have potential to win although that research will not always guarantee to win. We know that our research can be wrong because we may miss something but that will not be a problem. That can be our good lesson to learn more to improve our skill in analyzing the match. We should know that will depend on our lucky that will help us to win so when we don't have luck, we will lose in our bet without a chance to cash out.