You are 5-7 in your league, which means that you probably arent getting a very high fan survey. The higher your fan survey, the higher your attendance.
I also realized that you have played 3 crappy teams on your last 3 home games; are you making 50K week profit the last 3 weeks, or has that been what you make when you have a big home game? You still have to play #2 and #3 teams in your league, and looking at your attendance for your big games, it looks like that could cause a boost to your attendance.