Sorry, I can't help in game I'll try my best to assist here though. I'll start off by saying the patch next week should hopefully assist you getting rid of those blues and hopefully some and eventually all of those purples. If you haven't read the patch notes and the additional notes released today I would go give them a quick read. The main take away is named bosses will drop a high end when killed. This means hard missions will reward you with some HE items.
It seems like you are running with an SMG/Marksman combo. I run a similar loadout (Vector/M44). I need to craft more Mp5s, but I've been too lazy to do that. My loadout I went with perks that increase my crit chance %, crit damage %, armor damage, elite damage and anywhere I could pick up additional armor I did. I get about 54% mitigation.
I would assume your DZ rank is on the lower side (under 50) and are currently locked out from crafting a HE chest piece. No worries I ran with a purple for a long time. This also means you should focus on a backpack due to it's trait of being able to roll additional armor.
https://docs.google.com/spreadsheet...JC-FU_NowQH-fD7iUJ-avUrIs/edit#gid=1229216697
Check out that spread sheet if you want to see which armor or mods can possibly roll the stats you are searching for.
I was wondering if you could post some of your stats: Firepower/Stamina/Electronics numbers. Stats for critical hit chance and damage, damage to named enemies/elites, damage to armor. The 54% mitigation should be just fine. People should aim to be over 50% mitigation number. There is also a stat for reduction to elite enemies or something along those lines if you were aiming for that.
In CM you can use skills such as smart cover, booster shot, pulse to increase damage output and increase damage reduction.You might want to evaluate your talents as well. I don't have the list in front of me nor do I know the best ones off hand, but feel free to post and we can give feedback.
As far as the CMs themselves. Is there a particular mission you are running that you are having difficulty with or maybe getting hung up in a particular location? I would be happy to give battle strategy advice If I knew where the problem was happening during a mission. Even a non elite team can beat a CM can beat a CM with a sound strategy and using skills/abilities together.