I disagree with everything you said except on one part.... know when to back off a firefight. You do not have to engage every person. If there is a strong chance you are going to die then stop and run, regroup. Your deaths are giving points to the other team. Keeping your deaths in check is just as important as getting kills. People often play this game like it's a race to the end, trying to get as many points as fast as possible. It's not a race! Slow it down! Dont die and get butthurt then spawn holding the sprint button just to go avenge your death. Most likely it will lead to another death.