Problem with my team

Hi, I have a problem with my team in the new season.My team is seventh level, seventh season.Do now have three firsts and three second.My team is average 49.8 but something happens this season, the players perform poorly and lose almost all their games. dont know me know the problem.I do things as I have done in the past six seasons with success, but now things do not get things and I don't know why.I have a second team that is not connected to Facebook I want to cancel but I do not know how.Regards!