Need advice from an adult plz

Hey guys I’m 20 years old living with my single mom and 5 kids. I have 2 older brother who are 27, 24 me 20, 1 younger brother who is 19 and a younger sister who is 15. As you can see none of us are little kids anymore. We all live in the same house it’s very frustrating because this this moment only me and my mom are working. We are the only ones paying rent, utilities, groceries etc. I’m sick and tired of this. I really want to move out but haven’t really saved much due to me not having extra money too. I’m scared of moving out because my mom doesn’t want to leave her kids alone. I really don’t know what to do I’m stressing to the point I can’t even sleep at night. Any advice on what to do. Do I stay? I also don’t make much for me to get a place for my own. I’m paying my car and for new tires that I’m doing payments on.