I am confused, they knew it that it is haram but they gamble because they don't see it as a haram. I think these are the people that I am talking about as the blacksheeps.
No need to be confused. That is human. They clearly know that it is haram but they still gamble. That's because the temptation of gambling can make them forget for a moment about the rules of their religion. And they even say it's okay, especially if you win. Apart from that, we also cannot force them to leave gambling because they desire to continue gambling. We can only give them advice and then it's up to them because they are the ones who live it.
Exactly! , its not that we are depicting their religion, but let's be honest, some people or most of the people out there that do have their own religion sometimes do the things that are forbidden in their religion. Yes, it is stated in their religion beliefs that this thinc is bad or forbidden, but according to human nature, they will tend to do things as they can't control themselves and they can't fight the urge. And gambling is one of them. Like the OP said, gambling is forbidden in their religion, but they still do it. Why? It's because they can't control themselves, and let's face it, not all people could be as disciplined as the other members of their religion. What should they do? Make it a secret. Yes, maybe the god or the person they are worshipping might see what they are doing, but we can't do anything about our own desires or decisions. If we decide not to follow religion, then it is. The same goes for gambling. As long as we can't control ourselves, even if we stay in the religion that gambling is forbidden, we will still do it.
Yes, those are the people who still gamble even though gambling is prohibited in their religion. They don't want to leave gambling because there is an urge to make money from gambling so they will continue gambling even though they don't have a big chance of winning. If it is their wish to continue gambling, we can only leave it to them and that is their responsibility in gambling. The important thing is that they know that gambling cannot always make money, but they will experience a lot of losses. This is what they are aware of, so even though their religion prohibits gambling, it doesn't mean anything to them because they want to continue gambling. We just let them choose and they should also be aware of the consequences.