In practical world everyone wants to win the bets they are making even if their intention is not to make because human psychology tells that we need win and we can't accept loss, that is the secret behind the success of gambling industry throughout centuries because when someone lose they will come harder and keep betting and when someone win they will bet as well.
Yes, everyone wants to win, but they do not see how big their chances to win. People will keep playing without stop, especially if that person is addicted to gambling, and that will make the casino grows, bigger, and richer.
And that's why the gambling site will post big wins on social media accounts to get attention and there is a high win or lucky win tab on their website so that those who visit their platform know that someone has won big through the game and in my opinion that's normal .
As for luck, it is not that players do not understand or remember it, but rather to test and hope that luck is on their side, often there are strategies to be able to achieve luck or big wins, for example stopping when experiencing losing streak but the curiosity keeps players playing until all the balances run out.
Yes, I admitted that can happen to them, especially if they have luck when they play that games.
I am sure there is a strategy that can help them to win, but if they do not have another strategy, I am afraid that they will hard to win in the next rounds because the situations will always change and will not be the same.
A gambler needs to know and realize that so they know their limits and how they can manage their money.