How to remain mentally stable when living with a sibling with schizophrenia?

This is my first time posting on reddit. I’m 20 (f) and still live at my parents house. I have a good relationship with my family but living with my brother who has schizophrenia is difficult. At night while everyone is sleeping he starts talking to himself really loudly. I used to have a good relationship with him till he made me feel uncomfortable by making inappropriate comments about my body. My parents are immigrants, they don’t understand nor do I want to have that conversation with them. It’s really difficult living with him, I know it’s not his fault but it’s taken a toll on my mental health. I’m not in the financial situation to move out but definitely hope to within the next 5 years. Sorry to rant but I needed to let it out.