As the title itself, Im thinking about the valid reason why gamblers continue to gamble even if they are losing a lot of money. Is it hard to understand that gambling will just make your money lose if you still continue?
So many addiction stories, people shares their losing experience and yet you are still gambling. The more you play the bigger the chance to lose the money. What is your reason to continue? Are you willing to chase your loses despite of the risk?

Source:
FaisamtraderChase to fall? 🧐 - (Not a photo of mine, just for an illustration of being greed)
In the first place you should not treat gambling as a way to make money, you will end up frustrated if you are thinking that you will play and make money if you are the read the TOS of every gambling sites and experts opinion about gambling, you will understand that gambling should be for entertainment only.