After the first win i think o most 95% of gamblers want to bet again because you have a feeling that you can continue the winning run for sure. I personally after a win never stop so maybe its a mistake but it gives you a huge boost that you can win big that day and in most cases that dosent happen
This self-confidence brings greed within them and makes them believe that perhaps the opportunity will come for the second time, gambling really attracts the psychology of greedy people, they will spend a lot of money to achieve their hopes, unfortunately they are not aware that they have spent a lot of money, because they have experienced the first win that makes them confident.