My only advice is do not spend a penny on this horse**** until they fix it. Or you will end up breaking your phone/pc. This game punishes you for having a good team. If your team is rated 100+% at the end of the season, next season you will be playing against mutant teams in all competitions and want to quit the game. I personally try not to end with a team higher than 93%. It usually pools me into a fun, fair competitive pool of opponents in all cups where I don't feel like I need to pay to win, just need to have a good training plan and tactics. That's my only advice in terms of actual mechanics. Other than that, expect to lose for no reason, expect the after match report to sound like someone throwing salt in your wounds.