You will be familiar that people don't keep their success as a secret but they must keep their defeat as a secret so same is the case with gambling which is consider as a bad activities by this society and people get failure by involving in this activity therefore may be they are keeping it secret.
But there is nothing which remains secret always and one day secrecy becomes out either in a type of success or in a type of defeat. Gambler is a person who will start gambling with keeping in mind that they will earn huge money but the outcome is not according to their hopes.
Well, maybe most gamblers think of gambling as a way to earn money but not all gamblers think this way, and some of us might not like sharing any of the activities that we do in private with anyone whether it's a friend, a relative, or anyone. There are people who share almost every single thing with their friends or at least one friend, they even share what happens between them and their partner but I don't find that to be a good thing in all situations.
I, and I'm sure a lot of other people, don't gamble to earn money, I do it occasionally only to entertain myself a little bit by spending a very small amount that I know I wouldn't think about twice even if it's lost and I would obviously not share this activity of mine with anyone for nothing else but it is nothing that important to be shared.