Please help how can i take divorce when another party is not ready.

Its been 3 years of marriage. I don't have any financial support from him. Before marriage he and his parents lied saying they are my cast. After marriage i got to know. He was even jobless when we got married. Later he got job but still he use to spend my money. And then one day he got to know about my past relationship with my ex and started blackmailing me with those photos. When i complained about his financial status to my parents they got angry and now i am with my parents but he came to my home and told everything about my ex n my relationship and about photos. My parents hate me because of this. Now parents are clueless they just want me to be with this relationship they want me to adjust with him because he is not ready to leave me his father also convinced my parents saying his son will do good in terms of finance. From past 1 and half year he is working in qatar i dono how much he is earning but got to know he is not saving single rupee. I don't want to waste my life