adding and decreasing life

//script reference

    [SerializeField] GameObject spawner;
    [SerializeField] MovePlayer movePlayer;
    [SerializeField] AudioClip winningSFX;

    // cache references

    [SerializeField] int ballsLeft;
    [SerializeField] int livesLeft = 3;
    [SerializeField] GameObject livesImg;
    [SerializeField] GameObject livesImg2;
    [SerializeField] GameObject livesImg3;
    [SerializeField] GameObject livesImg4;
    [SerializeField] GameObject livesImg5;
    [SerializeField] GameObject winScreen;
    [SerializeField] GameObject loseScreen;
    [SerializeField] TextMeshProUGUI ballsLeftText;
    [SerializeField] GameObject spawnerParent;
    [SerializeField] GameObject spawnerParent2;
    [SerializeField] GameObject spawnerParent3;

    // Start is called before the first frame update
    void Start()
    {
       var movePlayer = FindObjectsOfType<MovePlayer>();
        loseScreen.SetActive(false);
        winScreen.SetActive(false);
    }

    // Update is called once per frame
    void Update()
    {
        ballsLeftText.text = "Balls Left: " + ballsLeft;
    }

    public void CatchBall()
    {
        ballsLeft -= 1;
        if(ballsLeft < 0)
        {
            ballsLeft = 0;
        }


        if (ballsLeft == 0)
        {
            Destroy(spawnerParent);
            Destroy(spawnerParent2);
            Destroy(spawnerParent3);
            DisplayWinScreen();
            movePlayer.enabled = false;
        }
    }

   public void LoseLife()
    {
        livesLeft -= 1;

        if(livesLeft == 4)
        {
            livesImg5.gameObject.SetActive(false);
        }

        if (livesLeft == 3)
        {
            livesImg4.gameObject.SetActive(false);
        }

        if (livesLeft == 2)
        {
            livesImg3.gameObject.SetActive(false);
        }

        else if(livesLeft == 1)
        {
            livesImg2.gameObject.SetActive(false);
        }

        else if(livesLeft == 0)
        {
            Destroy(livesImg);
            Destroy(spawnerParent);
            Destroy(spawnerParent2);
            Destroy(spawnerParent3);
            movePlayer.enabled = false;
            DisplayLoseScreen();
        }

        else if(livesLeft <= 0)
        {
            livesLeft = 0;
        }
    }

    public void AddLife()
    {
        Debug.Log(livesLeft);
        livesLeft += 1;
        Debug.Log(livesLeft);
    }



    private void DisplayLoseScreen()
    {
        loseScreen.SetActive(true);
    }

    private void DisplayWinScreen()
    {
        AudioSource.PlayClipAtPoint(winningSFX, Camera.main.transform.position);
        winScreen.SetActive(true);
    }