How to stop an animation script in Unity?

Question

Game development

Please help me figure out why the animation script (OlavAnimation) cannot be stopped when the game is started (clicked).

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class KillMe : MonoBehaviour
{
    private OlavAnimation Olav;
    // Start is called before the first frame update
    void Start()
    {
        Olav = GetComponent <OlavAnimation>();
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButtonDown(0));
          Olav.enabled = false;

Answer 1

1. Is there an EventSystem on the stage in which this script is executed? Otherwise, your clicks are simply not read
2. Tried to debug (can you run a debugger?)? Does all code work?
3. Is OlavAnimation definitely present on the same object as the KillMe script? Again, turn on the debugger and see if the GetComponent<> function finds an OlavAnimation type component. (attach a screenshot of the inspector with this object to the question)