You will get this feeling especially when something is blocking your team from performing as it should. I think that there is a percentage efficiency regulator. When your team is set to a relatively low percentage efficiency, it is very difficult for you to beat a team close to the visual quality of your team. Consider a 5 star team being applied a percentage efficiency of 60%; that makes the team only 3 stars when playing on the pitch. This is a very significant effect. If this 60% team plays against a 4 star team playing with decent tactics, it will have a lot of difficulty. You will think that you were 'trolled', but actually you played using 3 star team against a 4 star team.