How To Deal WithToxic Family?

So basically I realised my mom and brother are toxic and my father has to support my mom's words against me unwillingly... and I'm 17 years and a few months and in 12th Grade female. Not financially stable rn... So I am planning to run away... so its decided I will run away within 2 to 3 years so what are the tep I can take...? I mean I wanna runaway abroad

I hope someone can guide me with this