How do I tilt my camera when I'm doing a certain action

Questions & Answers
1

I want to rotate my camera to a certain degree when I am doing a certain action, can anyone help?

2

public Camera _camera;
private float degrees = 0;

    // Update is called once per frame
    void Update()
    {
        Vector3 EulerRotation = _camera.transform.rotation.eulerAngles;

        if (Input.GetKey(KeyCode.A)) //While holding down 'a', rotate camera to the left
        {
            if (degrees < 20)
            {
                degrees += 2f;
                _camera.transform.rotation = Quaternion.Euler(EulerRotation.x, EulerRotation.y, degrees);
            }
        }

        else if (Input.GetKey(KeyCode.D)) //While holding down 'd', rotate camera to the right
        {
            if (degrees > -20)
            {
                degrees -= 2f;
                _camera.transform.rotation = Quaternion.Euler(EulerRotation.x, EulerRotation.y, degrees);
            }
        }

        if (Input.GetKeyUp(KeyCode.A)) //If i let go of 'a', return camera to default rotation
        {
            Start:

            degrees -= 2f;
            _camera.transform.rotation = Quaternion.Euler(EulerRotation.x, EulerRotation.y, degrees);

            if (degrees != 0)
                goto Start;
        }


        else if (Input.GetKeyUp(KeyCode.D)) //If i let go of 'd', return camera to default rotation
        {
            Start:

            degrees += 2f;
            _camera.transform.rotation = Quaternion.Euler(EulerRotation.x, EulerRotation.y, degrees);

            if (degrees != 0)
                goto Start;
        }
    }