Does anyone else hate blacks ops as much as I do?

Alright so I hate this game so much I have 3.60 Kill Death Ratio so im not bad at all but this game makes me so mad I literally scream at the top of my lungs ''YOU ******* **********'' it pisses me off so bad how I shoot a kid with the famas a couple of times and they all hit him and he runs up to me with lightweight and stabs the **** out of me like wtf? what am I doing wrong? I use Ghost, Sleight of hand pro, and Marathon? my killstreaks are Blackbird, Chopper Gunner, and dogs? Can anyone tell me what im doing wrong because I dont get this damn game at all? I own KZ3, BFBC2, ACB, CRYSIS 2, BRINK, COD 4, and , UNCHARTED 2. im not bad at any of those games but none of them are as fun as cod. What perks, guns, and killstreaks do you use? and whats your KD?