Looking for excuses to deny the withdrawal

I met a friend through a dating platform last month, and soon after he taught me to download MT5, conduct foreign exchange transactions, and also use this SHENGHUI GROUP LTD foreign exchange platform. At first, I could make deposits and withdrawals. After several deposits and transactions, my friend told me to ask me about the platform activities. After I asked, my friend said that I didn’t need to withdraw money first, but I was afraid of being cheated and found out that there was a problem with this platform. With a suspicious friend. I just want to withdraw the money that has been deposited before participating in the event. But the platform customer service said that I must trade twice the principal before I can withdraw. I also went to the official website and asked the customer service. At first, the customer service only said that I can withdraw money by logging in, but in the end, they refused to apply for withdrawal.