No, because the tendency of most gamblers is to gamble more, not minding their loses, all they want is to have more winnings, thats the nature of their addictive endeavour.
Yes, they only think about how to win the games without thinking about how if they lose more money. They will forget about their losses in a few days or weeks or months ago because today, they can win some money. It feels like what they lose in a few moments ago is not exist because now they have the money.
They will only remember about their winning, and they will tell other people that they can win from gambling. But unfortunately, they don't realize that to get a win in the gambling games will need much money and of course, they will need luck too.