Not only is the weak mind only also there is their greed.
I personally don't think that in the case of gambling, any statistical odds, any other strategy or skill work, but rather the results depend solely on luck. And that's why you'll see that most gamblers who use that type of strategy for loss recovery or loss chasing end up losing while gambling. In many cases, it is seen that addiction to gambling is another major reason. Because they couldn't accept the losses.