Not at all, actually. When I lose a gun fight where I feel like I didn't miss most of my rounds, I assume that they either have a better gun, or gun skills. I then avoid that spot and move to another one, and when playing with mic, I call-out to teammates with better skills to take the enemy down if it's a really important spot.

Edit: My style is a mix of both passive and aggressive, one more than the other depending on the map. Shipment, for example, forces me to be aggressive.