working clicker idle

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using TMPro;
using System.Numerics;
using System;

public class Main : MonoBehaviour
{
    private const string MoneyKey = "PlayerMoney";
    public Text moneyText;

    //public TMP_Text formattedMoney;

    public BigInteger playerMoney;

    private void Start()
    {

        LoadPlayerMoney();
        DisplayPlayerMoney();
    }
    void Update()
    {
        //moneyText = formattedMoney;
        //moneyText.text = formattedMoney.ToString();
        //moneyText = FormatMoney(playerMoney).ToString();

        //moneyText = playerMoney.ToString();
        //oneyText = FormatMoney(playerMoney);

        //moneyText.text = playerMoney.ToString();

        DisplayPlayerMoney();
    }
    public void EarthClick()
    {
        playerMoney += 300000000;
    }

    private void LoadPlayerMoney()
    {
        if (PlayerPrefs.HasKey(MoneyKey))
        {
            string moneyString = PlayerPrefs.GetString(MoneyKey);
            BigInteger.TryParse(moneyString, out playerMoney);
        }
    }

    private void SavePlayerMoney()
    {
        string moneyString = playerMoney.ToString();
        PlayerPrefs.SetString(MoneyKey, moneyString);
        PlayerPrefs.Save();
    }

    private string FormatMoney(BigInteger value)
    {
        if (value < 1000)
        {
            return value.ToString();
        }
        else if (value < 1000000)
        {
            return $"{value / 1000}K";
        }
        else if (value < 1000000000)
        {
            return $"{value / 1000000}M";
        }
        else
        {
            return $"{value / 1000000000}B";
        }
    }

    private void DisplayPlayerMoney()
    {
        //moneyText = FormatMoney(playerMoney);

        string formattedMoney = FormatMoney(playerMoney);
        moneyText.text = formattedMoney.ToString();
        Debug.Log($"Player money: {formattedMoney}");
    }

    public void AddMoney(BigInteger amount)
    {
        playerMoney += amount;
        SavePlayerMoney();
        DisplayPlayerMoney();
    }

    public void SubtractMoney(BigInteger amount)
    {
        if (playerMoney >= amount)
        {
            playerMoney -= amount;
            SavePlayerMoney();
            DisplayPlayerMoney();
        }
        else
        {
            Debug.Log("Insufficient funds!");
        }
    }
}