What are my legal options for ₹30 lakh investment fraud?

I was in a relationship with a man I knew since 2019. In 2021, he invested ₹30 lakhs of my money into a few shares through a Zerodha trading account—against my wishes—assuring me that he would cover any losses, as he didn’t have the funds to invest himself. Now, my ₹30 lakhs have reduced to ₹7 lakhs over the past year. He has turned out to be dishonest and has left the city since 2022. He refuses to return my money, despite my offer to transfer the shares in his name, as agreed initially. Please advise on what legal options I have.