I felt guilt for convincing the people to come into gambling when some of my friends I invited them for gambling got addicted very soon so we need to pick the right kind of peoples for making them gambling if we have the poor people to make into gambling then it may affect them and their family life.
So I think you need to help your friend if somehow he becomes an addicting person in gambling because you are the person that convinces him to enjoy gambling. Maybe he cannot get what the meaning of enjoying gambling and makes him continue playing gambling and makes he lose his money. No matter what, he still your friend and it is your duty to get your friend and leave the gambling games. And if we want to convince people to enjoy gambling, we need to select who is the right person that can know what gambling games are so he can avoid becoming an addicting person in gambling.
But sometimes we never truly get to know people. Someone might look perfectly capable of enjoying gambling but become addicted to it. Stop taking the risk that the person can enjoy such thing and redirect them to other fun things like online gaming, sports, and art. There are other things that people can enjoy without risking themselves in getting hooked to it and lose so much money from it. The involvement of money is what makes gambling enjoying so there's really no such thing as "gambling only for fun and not for profit". Imagine a casino where there's no money involved and there's just tokens. Eventually people will give the tokens equivalence to real money. If they are unable to do so, they are going to leave. Playing cards for nothing is unenjoyable. You can at least punish the loser by making them do silly task, at least, so there will be some reward going on for the winner.
Yeah it is completely wrong. Why you do not convince people to invest in crypto? It is much better than convincing then for gambling. It means that you are dragging the people around you to this hill. If somebody gets gambling addictor and he lost everything in gambling, what would he think about you? He will definitely blame you for his bad conditions.