How can I detect if the player is actually moving right with this MovementDirection script?

I've been having an issue with this script where I'm unable to detect exactly when the player moves to the right, is it not possible or am I just dumb?

local movementDirection = camera.CFrame:vectorToObjectSpace(humanoid.MoveDirection).Unit
	if math.abs(movementDirection.X) > math.abs(movementDirection.Z) then
		camera.CFrame *= CFrame.Angles(0,0,0.1) -- This makes the camera tilt slightly to the left, but since i have no idea how to detect if the player is moving RIGHT, I can't re-use this line and subtract the value so that it veers into the opposite direction.
	elseif math.abs(movementDirection.X) < math.abs(movementDirection.Z) then
		print("forward or backward")
	end

I'm also stuck on how to lerp/tween the camera.CFrame manipulation part, since i want it to be smooth instead of instantaneous.

Keep in mind this script is inside a RenderStepped function!