I think you lost because your build is awful if you want to carry.
Try to get actual damage items next time. If you had BT IE Triforce Last whisper you probably could have carried because you would have actually been doing damage.
Don't blame your team, instead look at ways you can improve. That build only works for a pokey/disengage/split push not for carrying an low elo ranked game. --- GT:SephisticatedBest MW2 player on GFAQS Haters gonna hate me cause they ain't me| Nuke on Every map