moving all player movement into a single method

playerMovement.cs

  void Update()
    {
        PlayerMovement();
    }


    void PlayerMovement()
    {
        float horizontalInput = Input.GetAxis("Horizontal");
        float verticalInput = Input.GetAxis("Vertical");

        transform.Translate(Vector3.right * horizontalInput * _speed * Time.deltaTime);
        transform.Translate(Vector3.up * verticalInput * _speed * Time.deltaTime);
        


        if (transform.position.y >= 5.7f)
        {
            transform.position = new Vector3(transform.position.x, 5.7f, 0);
        }
        else if (transform.position.y <= -5.7f)
        {
            transform.position = new Vector3(transform.position.x, -5.7f, 0);
        }

        if (transform.position.x >= 11.35f)
        {
            transform.position = new Vector3(-11.35f, transform.position.y, 0);
        }
        else if (transform.position.x <= -11.35f)
        {
            transform.position = new Vector3(11.35f, transform.position.y, 0);
        }
    }