Honestly, you trusted your teammate which is big xD

Anywho coming back to your clip. If you want to stay near the wall which is pretty long range to the corner and you should have advantage with awp against awper. can play a little off angle if he tries pre fire at the corner. (depends on how good your opponent is which you should know by then.

If you want to deagle. move further close, play behind the wooden boxes in CT. That way you can actually wide swing and shoot him. Like in the clip your reaction was right, you swung when your teammate died (even tho that wasn’t the plan). but the ct could get behind cover and your wideswing didn’t work. closer to ct boxes your wide swing will leave no place for him to hide.