KD doesnt define the player. So your problem is about skill.
Skill is gained throug playin against other people, Bots (Hardened or Veteran) the CAMPAING to know the basics, if you want to have fun as you say play other games or a fun FPS there is TF2.
This new CoD (and the Newers) are gonna be more for the competitive players.
I hope they bring back Boot Camp for the new players.