There is no greedy gambler if he does not get a win. Greed becomes a trait, and victory becomes a perfect tool to trap gamblers.
As long as gamblers can control themselves and are consistent with it, then gambling will be fine. But for gamblers who find it difficult to control their greedy nature, of course, it takes more effort to be able to gradually not be tempted by the victory that traps gamblers, to be ambitious to get a bigger win.