My Transform.Forward stops updating even when I rotate my player object

Hello! I am trying to work on a player controller to move the player object! I am calculating the move direction with transform.forward and transform.right since the player rotates with the cursor but when in game mode a few seconds in, the transform.forward and transform.right stops updating even when the player object rotates (so the player just moves in one direction D:). What may be causing this stop in update and how do I fix it?

Here are the relevant parts of my code:

    private void FixedUpdate()
    {
        if (canMove)
        {
            playerMovement();
        }
    }

    void playerMovement()
    {
        moveVert = Input.GetAxisRaw("Vertical");
        moveHori = Input.GetAxisRaw("Horizontal");

        Vector3 moveDirection = (transform.forward * moveVert + transform.right * moveHori).normalized;
        Debug.Log("transform forward " + transform.forward);
        Debug.Log("transform right " + transform.right);
        Debug.DrawRay(transform.position, moveDirection * 5f, Color.green);

        playerRB.MovePosition(transform.position + moveDirection * Time.deltaTime * playerSpeed);
    }

    void playerRotation()
    {
        //based on the mouse input we want to be able to rotate the player and or camera horizontally or vertically
        //along horizontally the player and camera should move but horizontally only the camera should move

        mouseX = Input.GetAxisRaw("Mouse X") * mouseSensitivity * Time.deltaTime;
        mouseY = Input.GetAxisRaw("Mouse Y") * mouseSensitivity * Time.deltaTime;

        yRotation += mouseX;
        xRotation -= mouseY;

        xRotation = Mathf.Clamp(xRotation, -90.0f, 90.0f);

        transform.rotation = Quaternion.Euler(0, yRotation, 0);
        mainCamera.transform.rotation = Quaternion.Euler(xRotation, yRotation, 0);
    }

I’d appreciate any help!