Request for Legal Advice Regarding Unpaid Funds

I am writing to seek your legal advice regarding a financial issue I am currently facing. Earlier this year, I worked with an individual who assisted me in handling payments from clients, as I was under the age of 18 and unable to have a bank account under my name. At first, it worked well—he made payments on time and managed the funds for my marketing projects. There was no formal agreement in place, only trust between us. i Used to give him 10k - 20k for this. However, after a couple of months, I requested a sum of INR 5,00,000 for my college fees. He initially assured me that the payment would be made within a couple of days, but then disappeared for 3-4 days. Eventually, he contacted me via LinkedIn, claiming that his phone had been stolen. When we spoke again, he informed me that all the money had been stolen by the thief, and that a loan of INR 2.5L had also been charged to his credit card due to the theft. Despite this incident, I chose to continue working with him. Although I was just a month away from turning 18 and opening my own account, I made another transfer to him of INR 6-7L from client payments. For about two weeks, things were fine—some of the previous payment dues were cleared. However, there is still an outstanding amount of approximately INR 10,00,000 with him. Once my current account was active, I asked him to transfer the remaining funds to me. After a delay, he claimed that he could not make the payment because the money had been used for his credit card bills. Since then, he has blocked me on all communication channels, including WhatsApp, phone calls, and LinkedIn. In total, he owes me around INR 15,00,000. I have all the relevant invoices and communications with him that show the payments he received. There was no conflict or disagreement at any point, only trust. I am hoping to understand what legal steps I can take to recover these funds. I look forward for guidance on this matter.