Good that you've realized it. While reading your story, I've already knew it that it's a scam attempt to you. Didn't you know that even you had someone a video call/chat, there are software that can easily fool you out like split cam and AI voices, etc.
These software can make you feel that you're really talking to a woman that's a lot of years younger than you. It's obvious that they want you to trade on that platform that they've made and once you've deposited there, that's the time for you to say goodbye to the money that you've deposited. I don't also understand why that strategy has been told to you to sell at exact 60 seconds after your purchase because it doesn't make sense.