Unable to withdraw

I met this friend from ig and we chatted through line for more than a month. He said he would take me to invest. I told him that I had no money to invest. He just tried me and thought he could invest in loans. He asked me to download Binance He downloaded the platform for me to use. In the beginning, he recharged 200 usdt for me. His data on the purchase price of the second contract is very accurate. I have also withdrawn cash here, so I didn’t think there was a problem with the platform at the time, so I spent 770,000 US dollars on it. After the house and car are mortgaged, the other party disappears and cannot withdraw money