What I found works well is to change your play style ASAP during that game. Sometimes it will start off great and turn into what you described. If you do this and stick with it, you will most likely come out at least even or positive instead of negative in your K/D. I know, the anger can be overwhelming at times (I have experienced it too) but perseverance helps keep you from quitting every couple games. Hopefully it will get better but something tells me that.....it may not.