The enemy looks at the player incorrectly from behind when he is behind

My enemy doesnt look at player properly when he's behind him. Like it's shown on gif

But when i stay ahead of enemy he looks at me properly, but as soon as I stay behind him like it's shown on gif he doesn't rotate to me and starts looking at me incorectly . I've tried many ways to fix it, but nothing seems to work as i want. So here's my code, I don't know what's wrong with it .

 private void RotateToTarget()
 {
     Quaternion enemyRotation;
     Vector3 directionTolook = (player.transform.position - transform.position);
     angle = Mathf.Atan2(directionTolook.y, directionTolook.x) * Mathf.Rad2Deg;
     enemyRotation = Quaternion.Euler(0f, angle, 0f);
     transform.rotation = Quaternion.Slerp(transform.rotation, enemyRotation, rotationSpeed * Time.deltaTime);
 }
 

Thanks in advance!