Some parts are indeed unrealistic.
Players totally unmarked are getting no passes.
Attacker may have only the gk to beat and passes the ball 20 meters back.

Attacker is on the line of the posts , and gk with defenders in penalty spot, and my player gets offside.

Surely some things need enhancement.

The biggest fail for me is when I assign the free kicks to one person.
When ever live animation shows another player to take the free kick it is a sure goal.
Ball bounces on the wall, player assigned with free kick takes rebound, and scores.
I feel like psychic that I guessed who will get tha ball