Everyone has their own luck, but it all depends on how much luck they have and how often it happens. That's the problem, because some people actually have very little luck in gambling. Or, if they do have a bit of luck, it's because they've already lost much more money. So, it's like looking at your own doom if you just start gambling, without proper management, relying solely on luck like in slots, and don't have bankroll management.
Before talking about how to cash out winnings you need to get lucky first to win, after winning that is when we can decide on what to do with it, either to take it or use it to continue gambling. Different gamblers react to winnings in different ways, some will see it as a reward and withdraw to enjoy it, some will get greedy and use their win to continue gambling with the believe that they will use it to win more while majority will use it to chase loses. Winning is a big deal in gambling because normally we lose more than what we win, so I think that how you choose to spend your winnings should matter to you. I believe that it is best to withdraw winnings and use only your bankroll to gamble.