Same here for last season... out of the blue, from 1st place to 5th... no winning for 6 games in a row including 4 loses, draw (0-0) with a team placed on the #13 place after shooting 24 times and 11 on target, it was unbelievable, I had 5 free kicks that the goalkeeper saved, 1 double corner with no goal and another corner with head and no goal as well.
5 players that had average of 7-8 every game got 4-5 and my top scorer scored 2 goals in 7 matches...

"good" to know that it is not only me.

I sold most of my team and hope it will "solve the problem".