Not with my husband

Marriage 2016 Incident 2020 After getting married I found it difficult to live with my husband as he was very harsh and emotionally harrassing me every day. But my parents convinced me to pursue as it might be my adjustment problem. We hd a baby boy in2018 and he continued this harsh behaviour to my 3month old. So i used to be with my parents stating one reason or the other. I was also not able to understand his switching behaviour ie at times loving and a small action which is not welcomed from his point of you he'll start cursing sometimes hitting my child etc. In August 2020 he pushed me to stay with my parents as I was studying and he can't look after us( he is working as a clerk in MACT). So took this a s an opportunity and I moved to my parents place. Now he is calling back but I know he is going to ill treat us if we go back. Im afraid and i declined stating I'll come back only if I get a permanent job. But Im planning to file a divorce after getting a job(if not my parents wont support my decision). What can I do in such a situation.