From my experience, 'losing to much 'or team performing badly after winning a lot the previous season is nothing new. In the past, my team was like 'unrecognisable' after winning a double or treble the season before - makes you asking yourself: were they the same players of the previous season, despite they were still relatively young? Some things are just bad simulations or bugs/flaws or put in deliberately to make an active manager spend more.