How to restrict first person from turning 360 degrees when sitting?

I’m trying to not allow my player to fully turn when he is sitting down but can’t get it to work. I have the up/down axis working and restricts it to -35, 35, but when trying to restrict the left/right axis it doesn’t work and no errors are thrown. Here is my code with the left/right axis stuff commented out.

public class MouseLook : MonoBehaviour
    public float mouseSensitivity = 100f;

    public Transform playerBody;

    private float xRotation = 0f;
    float yRotation = 0f;
    // Start is called before the first frame update
    void Start()
        //removes cursor from view
        Cursor.lockState = CursorLockMode.Locked;

    // Update is called once per frame
    void Update()
        //set the mouse x&y movement
        float mouseX = Input.GetAxis("Mouse X") * mouseSensitivity * Time.deltaTime;
        float mouseY = Input.GetAxis("Mouse Y") * mouseSensitivity * Time.deltaTime;
        //decrease xRotation based on mouseY
        xRotation -= mouseY;
        if (PlayerMovement.isSitting)
            //restricts the player from turning their head too far up/down
            xRotation = Mathf.Clamp(xRotation, -35, 35);
          //  yRotation = Mathf.Clamp(yRotation, -35, 35);
            xRotation = Mathf.Clamp(xRotation, -60f, 60f);
          //  yRotation = 0f;
        transform.localRotation = Quaternion.Euler(xRotation, yRotation, 0f);
        //move player left/right when mouse is going across x axis
        playerBody.Rotate(Vector3.up * mouseX);

Wouldn’t this be a Z rotation for left and right given that the perpendicular axis is Z?