In January, a friend recommend

In January, a friend recommended me to invest on this platform. In May, I want to withdraw money after making a profit. I invested 4.5 million yen, paid 7.5 million yen in taxes and 1 million yen in risk control insurance, and I was still asked to pay 1.1 million yen. All my life savings are invested, but I cannot withdraw the money. Help me, an old man in his 50s, to get my hard-earned money back. Thank you friends. I'm so desperate.