I’m really sorry for you man, the best thing you can do here is report them and tarnish his or her reputation, but I know them, they will still go and create another account and come back to scam people.

You shouldn’t be engaged in any business with just anyone you see here, most people you see here are scammers, I’ve also lost my money to a scammer once, and the bad news is that there is no way you can get your money back, unless the scammer is a nice person and decides to send it back, which is probably not going to happen.