Induce to participate in the activity, the account is frozen after the activity, and the fund cannot be withdrawn after the unfreezing the account and paying tax

I met a friend on WHATSApp earlier, and soon after he said he would take me to trade MT5 foreign exchange and trade on the platform SHENGHUI. You can actually deposit and withdraw money at the beginning. Later, my friend asked me to participate in an event with him, and I needed to invest 50,000 US dollars, so I used my own deposit to inject it into the account. When the activity was completed, I wanted to withdraw the money, but the customer service said that due to political reasons, the senior member can only be withdrawn. After the promotion, the customer service said, "Your account has been transferred to multiple accounts for many times. The control system will automatically review your account for suspected money laundering, and the system will freeze your account for risk control. You need to submit your front and back ID cards and your recent running water to the customer service for verification.” So I handed in all the documents. After that, their customer service informed me that I had to pay a deposit of 20,000 US dollars before the account could be unfrozen. I feel cheated, and I suspect that this friend seems to be cheating me together. He keeps asking me to deposit money into the account, and also asks me to borrow money into the account. Because I am afraid that the money in the account will not be returned, I have no choice but to ask my friend to borrow money and deposit it into the account. ! Thaw in a week. After the thaw, he said that he would have to pay taxes to withdraw the money, and now he is even more suspicious of this friend! I just want to get back over $150,000 in my account now. I hope you can help me mediate. The whole thing happened in the April-May period.