In fact, sometimes it's possible to get meaningful advise (although it's not proven if it's also useful one). Here are some:
q: which formations are illegal?
a: All the formations that are not used in the REAL UEFA are illegal
q: One of my players has been showing form=5 in Statistics for the last several games, despite keeping him in top morale and health. What is the reason? Is there anything in the game that would make him improve? Is it random? Or should I sell him?
a: Give him time to be in the better form, it will be happening soon if you are taking care of him as you are now.
q: Let's say, there are two strikers; one has attacking skills=60, physical & mental=50. Another has attacking=55, physical & mental=55. Their teams are equal otherwise. Which team has better statistical chance to win on neutral field, according to the algorithm implemented in the game?
a: Mental skill should prevail.