When I made tests (but those were friendly matches), it was clear that the results were more or less predetermined before the matches were shown to be played. The matches were more like matches on playback. I suspected that associations matches became the same too, and now it seems at least some matches of the other competitions are like that.
And yes, there is a 'flaw' in the game that indicates that things are predetermined - some of the assistant managers' comments during the matches.