Win rate change

I was in Div 3 before the last patch of fut birthday, I would not I am a good player but as in game I would experience 50% win rate in most of my games. But since that patch, my win rate has gone down to 10% or less, I cannot win a game in hours regardless of what I do. The whole point of the game is to have wins and losses, currently I am just having fun losing every game.