Well, this kind of scenario is what we call gamblers who cant be satisfied and not thinking properly, imagine losing a huge amount from your previous winnings? Imagine how much you can be regretful because of that, but again its their own fault, if they didn't play more hoping to gain more then they can be happy to their winnings, or instead a gambler should secure some good amount to their winnings so that no matter what happens in the remaining still you are getting something, simply securing the capital you have used and some of the money from the winning amount.
I think every gambler certainly knows the risks of gambling, the main thing is controlling oneself. If we can't control ourselves, of course we will lose a lot of our money when playing. It's true that temptation always arises when we've had a pretty good win. If you want to play again, I don't think there's much of a problem, the most important thing is to leave a little money to play to find luck again. It is better if you secure your capital and your previous winnings are much better than not securing your capital.