Then don't make the camera a child of the player, make it a child of the level and code it to follow the player . To rotate the character in the direction of the movement, set their velocity (assuming you have this variable) as
velocity=velocity.rotated(rotation).This will work if you are rotating the character yourself when certain keys are pressed.
To make the camera follow the player all you have to play with is the translation variable. Just get the distance between the character and the camera at the start of the game and be adding it to the translation of the camera in