Harassment by in laws especially mother in law

Mine was an arranged marriage. It's been 8 years now. Since the beginning, my mother in law has been very vicious. Nothing physical but her words and manner are always taunting. My husband is fully aware of this and has fights with her about this too but her attitude doesn't change. The father in law remains a silent spectator to this. When I tried talking to my mother in law about how her behaviour affects me, she and my father in law threatened to throw me out of the house. When I was pregnant, she didn't take any care of me. She didn't buy anything for the future child. She is extremely stingy and greedy with regards to money. During this lockdown, cooking and buying groceries have become very big tension issues in the house. I have to work online but she still mutters unkind things around me. Bangs utensils loudly in the kitchen(she does that anyway!), and complains about buying anything for the house. My husband though supportive is an emotionally distant and aloof person which I hate. I am not emotionally satisfied in this marriage either. I want to know my legal options. My salary is not enough to support me and my child. Going to my mom's house is also not an option as my job and son's school are near my in laws place. Kindly advise.