I don't even think that there is a strategy in gambling games. What strategies can we use in the game to enable us to win? I don't think there is, because gambling is closely related to luck, so I think we will win if we are in a very lucky situation at that time.
But I agree, every time we lose there is definitely a feeling of disappointment, because who wants to lose their money? But what makes the difference is that when we are ready with the money we use, then the disappointment probably won't be too big, especially if we were aware of it from the start.
Of course we will always want to win, who doesn't want to win? but the problem is that we won't get it all the time and the risk of losing is even greater than the chance of winning, so once again we have to be really prepared for the defeat that we will feel. We will get pleasure if we enjoy every round and we won't get that if our target is victory.
Those strategies exist, it is just that you need very specific circumstances to employ them and casinos are aware of them, so if you are found using them then you will get banned from most casinos, even if you were not really cheating, so the only way to make a lot of money through gambling, as it is the dream of many gamblers, is to discover through your own efforts a way to beat the casinos no one has ever thought before, a very difficult task without a doubt.