Last season I almost won the triple, this season I got crushed in Cup and CL, and will be lucky to get 2nd in League.
Did I suddenly forget how to play? No...

Just this season my strategy didn't work because a couple key players I was really counting on failed. 2 defenders I was counting on didn't do what I hoped, and I never got anything useful to replace them until recently, but it's of course too late to salvage much other than a CL birth next season.