I am curious how each type of team member contributes, and if the arrows really work. For example, I had my DC's with blue arrows and 1 DMC the same, but somehow a defender scored a goal and it wasn't from a corner kick.

I understand DMC's vs AMC's or atleast I think that's how it works.

What about the role of ML/MR or just 3 MC's

I've played someone who had a diamond formation 4-1-2-1-2, but there was no MC? What is a good counter to formations lacking MC's or DMC's?

Also, I have read the counter formations list. Just a little curious about the arrows as well.

Thank you.