How to protect myself from evil people living with me?

So I’m a 23 y/o female student and I live with my mother, stepfather and siblings. I’m the oldest, and most of the responsabilities at the house are mine. My mother, who’s 42, married this 29 y/o guy. They had a baby who’s now 3.

It’s hard to give context about my situation, but I’m a intern at a VERY important goverment office in my country and I can’t drop out even if they pay me “poorly” ( — to my family’s liking). I have the lowest salary at home since I’m an intern who works 4h/day meanwhile they’re on regular jobs — none of the adults at home have a degree, I’m the first one to try.

I used to hear A LOT about my salary at home, especially from my stepfather — he used to say I’m broke, he has 3x more money, etc. The problem is, people at home made A LOT of debts in my name when I had a little bit more. Anyways, last year I started a small business online and I made A LOT of money and could buy some new stuff I needed — a new phone and laptop. This business is helping me a lot, even though I feel like it could be very unstable.

I had to tell them I had this business online and now my mother wants to DROP OUT of her job so she can live off my money! When I say “no”, they think I’m wrong! I already help at home with money, and I also take care of my sister so they can save up the money they’d spend on a babysitter, which is a lot. Last year they made me skip 70% of my classes so I could take care of her, and I even got sick from stress. I feel like everybody at home is envious and trying to get my money in some way — coming up with emergencies, making comments about my stuff, etc. I’m afraid their energy gets into my business. Leaving home isn’t an option since I’m from a muslim family. What can I do?