OP, this is NOT normal, and “every” Indian household does NOT face this. The sooner you acknowledge this the better, because it’ll help you fight for all your rights. I’m not a lawyer and I understand seeking legal help could backfire, but I don’t feel it’s worth living like this. I agree with u/AbhiAintNew – seek help from an adult or NGO first (without making it public), live separately settle down, then file a legal case on your father and fight it with your all.
You’re a strong woman, and I pray all goes well for you and your mom.