Yes, playing gambling for fun will always be recommended because gambling is not for making money. We can not resolve poverty problem from gambling but that can make someone bankrupt fast.
When a poor people playing gambling, he must know that he can lose all the money he have and that will makes him can not fills his daily needs.
Even if he is a pro gambler, he does not have to use gambling to makes money. He will not know when he can win from the opponent so it is better he have a job that can helps him to earn money. He must remember that gambling can make him poor and not have money at all.
Yes, at least if gambling is a tool for us to find fun activities and will make our hearts happy, of course it is allowed, but there also needs to be restrictions in terms of controlling gambling so as not to be excessive in running it.
It is true what you said, people who fall into poverty are caused by being too excessive in gambling because they draw the wrong conclusion or hope too high for the luck of victory in it so that they play a lot without proper control so that they play as they please without any proper betting limits. And of course the result is that they will lose a lot of money that is bet compared to their luck.