Divorce from husband

Hello sir, I am married to my husband from the past 6months and I understood that the relationship is not going strong. I would like to file a divorce by contest based on the ground of mental cruelty. I have suffered from a long time. Out of 6 months we didn't had any physical relationship for 5 months as he went through a circumcision operation which I discovered after marriage. He is well now. Also his family continuously harassed me by putting pressure on me to get a job after marriage so I can take up my own expenses. I am working now. My husband also has a habit of drinking, verbally abusing and breaking items in his how. He never attacked me physically. They lied on a lot of things before marriage which I discover later. Only issue his dad is a patient of multiple miloma (blood cancer) from the past 4 years and his heart goes up and down and they will start blaming me for his health. But all through they have lied, tortured and pushed me by the wall. How can I get justice? Should I go for mutual consent or should I go for contest? What is the possibility of winning considering the condition of his dad? They are very rich and can pay a lot to anyone to win this case. How should I proceed?