Sadio Mane left the pitch angrily because Mohamed Salah appeared to him. After Liverpool were leading 3-0, Liverpool still had another chance to score another goal but Salah was a bit selfish and failed to pass the ball to Mane who was in a better chance to score.
Mane wasn't happy with Salah's selfishness and he left the pitch angrily. When he got to the bench he was even demonstrating how he was waiting for a pass from Salah which didn't come while Firmino and James Milner calmed him down.
Do you think Sadio Mane overreacted?