I want to move out

I want nothing more but to move out. My moms a drunk and all she cares about is drinking. She’ll disappear all day and night and won’t answer her phone, which worries me. She expects me to just stay at home and watch my little sister. I’m 18, I have a job. I want to live my own life. She gets mad at me for actually having a job because that means she actually has to stay home and be a mom.