My uncle is a drug addict

My uncle, (39M) is the third of 5 kids and he used to have aspiring dreams to become an architect. But he failed miserably. My father (43M) paid for his college tuition for FOUR YEARS, only to find out that for that whole time he wasn’t attending classes and didn’t graduate. So my dad was understandably mad and yelled at him. Now, my dad is the oldest out of 5 kids(all boys), his dad died when he was in university, after that he supported his siblings and my grandma financially till they were old enough to make their own money, and he has anger issues so the rest of my uncles always listen to him when he’s telling them something. But despite my dad paying for his WHOLE college tuition, AND his hotel, AND food, he had the nerve to talk back and told my dad that what he did for him is “nothing important”. Since then, my dad has given up on him.

Now the uncle who is the youngest of all of them, (35M) just got married to a pretty woman on the 1st of July. When he announced it, the drug addict said things like “I came into this world before you, how dare you marry before me?” He said all kinds of evil stuff and even cursed the wedding but my grandma prayed against it. In 2021 he even threatened to kill my grandma even though he stays with her and steals money and resources from her to buy drugs and share with his friends. So she had to come stay with us for a while. That’s when we realized that he’s like this because he’s jealous. The child after my dad (41M)pursued a doctoring certificate and is now a doctor with a wife and a child and is in America. The fourth (37M) who came after the drug addict is studying arts in Finland now, and the last child is in Germany preaching the gospel. The thing is, he’s depressed because the rest of his brothers are succeeding in life while he gave up a long time ago. They eventually sent him to a psychiatric hospital and tried to get him a therapist but he said no to both. Now my grandma lives in fear of him every single day because she’s too kind to kick him out.