Hi
@PedroCosta79 - The stats required for the player roles are below:
GK - Jumping Reach, Aerial Reach & One On Ones
FB - Good all round players with Pace, Positioning, Off the ball, Decisions, Concentration
CB - Jumping Reach, Heading, Anticipation, Composure, Concentration, Decisions - Good trait would be brings ball out of defence
DM - Same as CB but with Passing and Work Rate too
W - Pace, Acceleration, Dribbling, Agility, Crossing, Work Rate - Good traits would be runs with ball often & runs with ball down left/right
AM - Pace, Acceleration, Dribbling, Agility, Passing, Off the Ball, Work Rate, Vision - Good traits would be tries killer balls often & gets into opposition area
AF - Pace, Acceleration, Off the ball, Finishing Composure, Jumping Reach, Heading - Good traits would be tries to beat offside trap & any of the finishing traits