Or maybe he actually set aside some money to gamble but because he lost control of himself caused him to deposit another amount to continue gambling. This is normal for many gamblers because they find so much fun playing gambling that they don't want to stop gambling and causes them to deposit some more money. But if he does put aside some money to gamble and doesn't lose self-control, he really isn't going to gamble and has had enough of it.
Well things like this are very normal and natural, all gamblers will feel it but not all gamblers can organize themselves about what they should choose for the best. Self-control will be the most important in gambling, no one can help you but yourself. There are a lot of possibilities in it that cause gamblers to deposit money again, it could be because they have been annoyed by a few rounds there, and it is difficult to get something they want until their money runs out, but I'm sure it's just for a win, the reason all gamblers do it is to get a win or chase it. It's very real and everyone does it.
In gambling, we must prepare an amount of money we can afford to lose because playing gambling means we must accept all the risks, including losing money. And don't be too sorry for losing the money because we know that the amount of money won't come back to us and it turns out to be true. We can regret having lost money but we should not overdo it and there is no need to recover lost money in gambling.
Basically it should be like that, I mean if someone wants to gamble then they should think first, be responsible by agreeing with themselves that whatever the end result is they should accept it, and if they can't accept losing as the end result then it's better in my opinion to never gamble because it will only make you worse. That's right, never expect something to come back in gambling, because if you chase it back then it will only deepen the defeat, so learn to be able to accept all the risks and realize that gambling is only about luck.