It doesn't take much to find this because in my own environment, people like this think that the bigger and more defeats they experience, the bigger their victory will be later. They call the defeats they experience like they are saving because they believe that later they will get a big victory that matches the amount of loss they experience, this is ridiculous, I myself just laugh when I hear it.
I once advised him gently, but maybe because that was his initial thought on gambling like that, it was difficult to make him realize that gambling was not what he thought, I myself did not force him to get rid of that thought, I only occasionally reminded him not to overdo it.