Hi there i’ve been playing halo reach on and off for a while and i’m still need help, my armer is weak and I keep dying what do I do?
Armour is purely cosmetic, it has no determination of the outcome of the match. If you want to get better, I would suggest you learn the maps. The placement of power weapons, spawn points, and your controls.
Learn to aim for the head, and use precision weapons frequently (the DMR is your best friend).
The best way to get in this habit is to play SWAT a lot.
Watch a lot of pro gameplay on YouTube 
I practice in Firefight. That’s how I learned how to no scope