I'm getting worse at halo........

I found this out recently playing war zone, team slayer, infection, etc. I seem to have a lot harder time getting kills, especially compared to like a month ago, especially in WZ where I’m just not that good with the good reqs that I have (somehow I’m level 103 and have a Nornfang cert and H2 BR) Any tips on how I can improve my skills at Halo in general?

Hard to know w/o seeing you play. How would you rate your map awareness?