Fam app - UPI FRAUD TRANSACTION

A person advertising on Facebook, that ad shown to me, the ad topic was to get linkedin premium account at ***. After that I clicked on the ad and they redirected me to their whatsapp number on **th June **** at * Pm approx. I started conversation with him, he normally replied an very aggressive mode like he is only trustable guys. After that I delayed to pay and continue in conversation to get some discount some product details and his behaviour, I searched more details about him but couldn't find any negative temptation. Today he write message and start conversation and he finally push me and converted my mind to quick buy the link is ready, just buy, I'm online etc etc. I fallen in his trap after that I thought he is a trusted guys and paid the amount to his given UPI. His UPI wasn't searchable on GPay he guide me how to pay. Then I go through it. Once paid he asked for screenshot I send thag screenshot, but now instead of delivery what I paid for he started dram like wait, jaldi mil jayega, server down hai etc etc. I given him time for * hours to fix the issue but he just refused my all request and lastly he didn't send or given anything. He received ****, I didn't receive Anything's. I ask for refund my money he refused no response of my message, call, video call or even dialed call. So lastly he stopped replying of my message. And did scam to me. I have all the evidence and proof of you need I can share. Thanks I need mg money back, please help me sir. Thank you.
Here are Google drive for attached reference and screenshot.
https://drive.google.com/drive/folders/*J*M*u*GQSPF*aDqSWDv*bfT*Agljpuax