It's true that Yamal need to improve his off ball/run behind defense more if he wants to score more. But his role in the team is creator, difference maker, mean more ball to his feet.Lamine needs to make more runs himself. Score more goals like he scored vs Madrid in Supercup, Dortmund at home etc. Where pass was made by other attacking players and he was the one who made the runs and made himself open.
His run/off ball movement will come with time.

