Biggest error ever!!

Anyone tried a Cup or CL match when 1st match (Away) you win and 2nd match (Home) you lose?

Well... Something is EXTREMELY wrong here for me.

Look at these to pictures where you see Away and Home match (Reminder: Extra Ball Possesion 3% away and 13% home).
- Sorry for Danish language.

Played CL vs. a 3-5-2 formation by countering it by Butterfly (4-2N-2W-2) formation...
How can this be possible losing Home match with ONLY just 1 shots on goal (Home) when I got 5 shots on goal (Away)??

Error Error ERROR!!!!