OnMouseDown not working correctly?

Question

Unity

Game stop code -

public SpawningClickiongETC spawningClickiongETC;
    public GameObject deathPanel;

    private void Start() 
    {
        spawningClickiongETC = GameObject.Find("Main Camera").GetComponent<SpawningClickiongETC>();
    }
    private void OnMouseDown() 
    {
        spawningClickiongETC.ieBool = false;
        deathPanel.gameObject.SetActive(true);
    }

Object click code

public void startDelete()
    {
        StartCoroutine(delete);
    }
    private void OnMouseDown() 
    {
        animator.SetBool("New Bool", true);
        startDelete();
    }
    public IEnumerator delets()
    {
        yield return new WaitForSeconds(toWaitAfterDelete);
        Destroy(gameObject);
    }

Here is the collider of the object itself (don't ask why and why it looks like this)
here is the background collider, and if you run and poke at the top of this object, it counts it as a background kilk

Answer 1

onMouseDown only works with UI