1000 hours and I feel like I havent got better one bit

Ive spent so many hours in shooting range, so many hours playing tdm(I have 371 four-midable medals and 87x spend 15 min on tdm) and I feel like I didnt not improve at all. I only get 1-3 kills every game since I started playing it. Every time I "pop off" is when I go against very bad players who just started playing the game. I always lose 1v1s against decent players. I just feel like theres a skill wall I cannot reach over it.