Why doesn't smooth turn work?

Question

Unity

I want to smoothly open the door, but for some reason the code does not work

using UnityEngine;

public class Door : MonoBehaviour
{
    [SerializeField] private int _angle;
    [SerializeField] private Transform _root;

    [SerializeField] private State _state;

    enum State
    {
        Standart,
        Open,
    }

    private void OnMouseDown()
    {
        if(_state == State.Standart)
        {
            _root.eulerAngles = Vector3.Lerp(transform.eulerAngles, transform.eulerAngles + Vector3.up * _angle, 1000);

            _state = State.Open;
        }
        else
        {
            _root.eulerAngles = Vector3.Lerp(transform.eulerAngles, transform.eulerAngles - Vector3.up * _angle, 1000);

            _state = State.Standart;
        }
    }
}

Answer 1

Learn the concepts of "game cycle", "update" and that's it.

Answer 2

Yes, because it's spelled wrong.
To make something move smoothly, you need to execute the code so that every frame it moves the door in the right way.