we should have cleaned up sticky of this thread for noobs reference.
i think many if not most noob mistakes happen because people think too much of themselves and aren't really willing to listen and learn from thoes who know what they are doing.
i can't say i made any memorable mistakes my first (and only) milsim deep forest game, except for wearing a black bdu (only gear i had though) and knowing the sound of an empty mag (which prevented me from getting 2-3 amazing kills, and caused me to get shot almost point blank in the forehead

)
i find noobs to not have enough listening/communication skills during the game, and not being ready to work as a team.