I don't know how old you are, but if you're an adult you need to get out of that situation.

19M in uni, but no funds to get something over the summer/winter, so I stay over.

All I have to deal with now is endless shit talk mostly from my cunt mother but I'm guessing I just have to build a better frame to handle it.

You seem to feel as if you can "get your parents therapy" I promise you, this rarely works. They are on your own just like you.

No, fuck them. I'm talking about my younger brothers. I can get them on my insurance or something

That being said, the best way you can help your brothers is to lead by example, get fit and cultivate talents or whatever your dreams are. They will follow

So I actively fucked them up but I have to passively wait to help them?

Let go of these revenge fantasies of getting back at your dad, of fucking up your brothers beyond repair.

It's not a revenge fantasy to want to fuck up my brothers. I want to help them. Fuck my dad. Spit on his face and ghost him at minimum.