It happened to me only once, when I was new to Forex. The main reason is my greed, I use a larger lot size and the market doesn't support it. My capital is very small, namely; 100 $. They immediately disappeared before my eyes. But that gave me a lesson that "never trade without money management, and don't be greedy". and I blew up my trade the first time three times, the first time when I learned about forex trading, the second when I got a welcome bonus there was no deposit needed and third, when I had a strong post from the forum.