Your stats look pretty similar to mine in that tank. And I think you can't tell anything from 4-5 games. A high damage losing streak of 5 games is nothing. Overall is what matters.
But, replays of those five games would help other players suggest what you might have done differently. Having awesome damage in a game is okay, but if there's something you could have done by flexing, rather than whoring damage, then a loss kind of sucks. I'm still working on that part of my game, so I'm not saying I'm particularly good at reading a game and being where I need to be. But that is the essence of