Hello, I’m analysing the movement that happened on Friday, because I wasn’t able to stay at my computer and trade

As I can see there was a nice movement… I have counted that there are 166 pips of downtrend from the sell point marked by Anthony on the picture. But I’m not sure that that was the exact sell point that we should have opened an order. I will be glad to know the Anthony’s opinion. Can you explain where and why did we have to open and close the order. Also I can see that the price managed to stop near the support marked on the picture.
Best Regards!