MT5 fraud and unable to withdraw

I finally saved a sum of money and was called by a friend to use MT5. I thought I could easily make money, but in the end I found out that I couldn’t get the money. They will use tax money to press you, but all my money has been invested. Where does the money come from to pay the tax? I'm going to borrow an underground bank. Fortunately, I have to ask you guys before I know it's a scam