Reason you are paying attention to the missed bets that would have won, is because they would have made money for you. It's called confirmation bias and you would totally ignore it if you had lost, but you were actually looking for confirmation where you were right, unconsciously hoping you you would have been right. So it weights more to you then being wrong. Does that make sense?
I don't see what harm it does to bet on superstition, because most our decisions are done on gut feel, which is not far from trusting superstition. But same rule applies with that as well as anything: Don't bet more then you can lose.
It's the same thing that happens to us when we are trading. Even if you close a position in profit, you will still keep looking at the market to see how it performs after you've already closed your trade, and if it goes in the direction that could get you more profit, you will feel bad for closing the trade early because if you didn't do that, you could make more profits. This is normal, and it happens to every single person, and one shouldn't focus on such things because it is not going to give you anything positive.
When you have not made a bet, it's better to just let it go and don't look or try to confirm if you could've won or not, I mean, what's the point anyway? If you've missed it, just focus on other opportunities and try to make other bets on games where you know you have higher winning chances so that you can actually win instead of looking at missed bets and feeling bad about it.