Someone enticed me to join this platform

Some salesperson enticed me to join this platform, saying that a guru would provide information. Later, as I did not make any deposit, she said that I could use her money. She had deposit USD 5,000 to my account. Every transaction is very profitable. However, every time after the transaction, they began to entice me to join them. (of course I won't because I knew there were tricks). Until after doubling of earnings for the fifth time, she found that I still did not make any investment. She was ashamed into anger, saying that I can only make small money, which convinced me that they are problematic.
1. Since they want to make money, why not just make it themself? Why they chose to take me with them? She didn't respond to this. Since she said there would be no commissions for refering me, then why would she took so many efforts to invite me?
2, The regulation on the platform is weak (unlicensed). Their management has certain verbal tricks and always besided the point.
3. In the end, she said she wouldn’t contact me again, and the money in my account disappeared immediately. So she doesn’t need to confirm with me anymore to make the transfer, which also makes me feel that this platform is insecure. I encounter this kind of scam for the first time. Please be cautious.