So we have a friend and we say.
You see this diagram for example.
Do you think there will be a fall?
You enter the green spot with a drop command.
You also put a stop loss on the red dot above with a 10 euro loss for example.
Things are not going well and the price is going up.
It reaches the stop loss and the order closes with a loss of 10 euros.
You let the chart go up without opening a command.
And when it reaches a better point for you, you enter again with a drop command at the blue point while you put a stop loss above.
If in the green dot your order had a monetary value of 0.01 lots you can open an order in the blue dot stronger with 0.02 lots.
This means that your loss will fall in half distance and when the fall begins you will make your profit much faster.
If you had not put a stop loss at all all the way from green to blue you would have lost and in order to make a profit the fall would have to reach below the green point.
You can set up strategies with stop loss.