This is what I don't understand about the trade being "filled."
I Sell Bitcoin and have a limit of $$. If the price goes up and hits $$ then the Trade is "filled" and lost money.
In my last case, I Sell Bitcoin and it kept going down, down, down, which I want. When I open the order then the only option is Cancel.
After 30 minutes I cancel the order.
Is the only way the trade is "Filled" if it goes up and hits the $$ and then it's filled?
When the sell order is filled you didn't lost your money, but you got a short position open which will either have positive or negative returns depending on the price of the coin. Lets suppose you created a short limit order to sell Bitcoin at $26000 and the order gets filled, now you have an open short position, and after sometime the price goes to $26500 then you are having negative return from your shorting. And, if the price goes down again to $25500 then you will have positive return from shorting the Bitcoin. In first case if you close your position you will lose some money but in the 2nd case you will make money by closing the position.