It's okay what he's doing that when he wins a large amount of money, he hates it and buys the things he needs and also gives to his parents. That's why what happened was like a vice that magnetized him to always go back and forth to the casino to play gambling.
And in fairness, the amount of money he brought into the casino is also the same, and it can be said that if he has the guts to bet such an amount and if luck is in his favor, it will definitely be considered a jackpot. I hope he has self-control and discipline in such a habit he does.
But if he can calculate between the money that he brought into the casino with the win money, he will see that the money will be bigger than the win money. He needs to realize that winning in gambling is difficult so no matters if he deposit more and more money, that does not guarantee him to win in gambling.
And when he wins huge money, it is better he cash out immediately and quit gambling to avoids the intention to keep playing gambling and chase more winning.
If he is lucky and win the jackpot, that will be a life changer for him to better because he can win huge money that he can use for many things.