I can't remember the last mistake I made that prevented my winning in gambling other than betting wrongly, certainly not greed because I've overcome that in my life a long time ago. However, this doesn't stop me from knowing the mistakes people around me make while gambling, and it's certainly greedy, while some are afraid or confused at some certain stage. All these could be encompassed into emotion, we have to avoid that by being calculative and disciplined. And for those who do sports betting, they try to lump their odds together so that they can win big instead of lumping little to win small or bet independently, but they end up gaining nothing.
It's normal if you don't remember the last mistake you made because we usually forget it quickly. But it usually has something to do with greed because greed is what often arises when we are winning and it makes us continue playing gambling. And that's why we have to be able to prevent or overcome that greed so it doesn't get bigger so we can't control it. Many people have fallen because they could not control their greed and instead lost all the money they got from gambling. However, we have to keep trying to control that greed because otherwise, we will be the ones who will regret having lost everything we got.