Going NC for first time with nmom

So back story: my mom and I haven't really been speaking for the last few weeks because she attempted to yell at and criticize me OVER THE PHONE so I said bye and hung up. That was disrespectful to her cause clearly I should be listening to her rant and rave. I have a younger Bro (2 years younger) that still lives with her and he's completely UNDER HER INFLUENCE. The worse part is he can't even see it and we barely have a relationship due to nMom pitting us against one another as children, and as adults she's basically made me the black sheep and my Bro her fake husband (emotional incest, look it up). So it's me on my own in the world. How do I stop wanting a relationship with her? How do I stop waiting for her to be a good Mom and love me unconditionally? But most of all, how do I do this no contact thing besides not seeing her/texting/calling? I'm also afraid of her manipulating other family besides my brother to turn against me as she's done it before. I just don't know if I'm strong enough to do it all on my own for the next 60years 😔😢