The misuse of mentality cost you the game I think.
The more aggressive mentality works best if your team has high number of defenders (DMs and Ds) and not other way around.
The more defensive mentality works best if your team has high number of attackers (AMs and STs).
Normal mentality works best if your team has high number of midfielders.
Aggressive mentality exploits the low defending skill of the enemy attackers by using your defenders for attacking. If successful your defenders will get great form while ruining the enemy attacker's. To be successful your defenders should outnumber the enemy attackers or you leave yourself extremely vulnerable to attacks.