How do I get my younger brother out of a rut?

Anonymous
My younger brother is depressed all because of his height. He’s 19 and roughly 5’5 and all he does is sit in his room in the dark and watch stupid black pill videos, tik toks and other shit that talk about men’s height. He goes to work then comes home and mopes in his room all day. He doesn’t like my boyfriend and my sisters boyfriend just because they’re over 6ft and we’re 5’1 and 5’2. And he’s barely talking to us anymore as well. When ever my dad tries to talk to him all he says is “you wouldn’t understand”. He’s planning to get his own apartment soon but I’m worried about his mental health.
How do I get my younger brother out of a rut?
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