Alot of this is mostly experience and playstyle. Yes snipers and DMRs outrange AEGs, but an AEG is a AEG no matter how much you upgrade it.
How much experience you got?
While playing airsoft you got to keep asking yourself questions, or better put [[micro decisions]].
For example,
ATTACKING
- should I push up?
- Is there cover for me I can get behind after pushing up
- where are the enemy and what angles do they have, while I push.
- what are the advantages do I get for me or my team if I push at said location.
- when running is my path clear
Ofcourse these all seem obvious, but its the obvious mistakes we do that mostly costs us being hit, like overly extending or not evaluating ranges or angles and player positions.
The more you play, the better you will become; just like in everything we do within time.