It's all fake. 80% of opponents you meet are bots, not real players. Bonus training doesn't impact the match. Morale doesn't impact the match.

All matches are already decided by the system. They just make us wait every day to see the results. Some people believe they impact but that's not true.
I've tried once to loose last game in CL against a stronger opponent because I wanted to be 3rd and try UEFA league. I made a formation with all players out of possition. All on sides, no one in middle. Gk as ST, ST as GK and all mixed like this. Guess what?
I won.