Skin shop?

Question

Unity

Good day! So I'm new, but I want to ask how to solve the situation. I created a skin store for a 3D character, and I had problems with its implementation:
1. When I click "Buy" (the button is marked with the price of the skin), the "Equip" button appears, where nothing happens after clicking it.
2. For some reason, the skin I have chosen is not displayed on the character itself. I have 2 codes: a store, the appearance of a skin on a character.
I will be glad to help!

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

public class SkinControl : MonoBehaviour
{

    public int skinNum;
    public Button buyButton;
    public Image iLock;
    public int price;

    public Sprite buySkin;
    public Sprite equipped;
    public Sprite equip;
    public Sprite falseLock;
    public Sprite trueLock;

    public Image[] skins;

    private void Start()
    {
        if (PlayerPrefs.GetInt("skin1" + "buy") == 0)
        {
            foreach (Image img in skins)
            {
                if ("skin1" == img.name)
                {
                    PlayerPrefs.SetInt("skin1" + "buy", 1);
                    PlayerPrefs.SetInt("skin1" + "equip", 1);
                }
                else
                {
                    PlayerPrefs.SetInt(GetComponent<Image>().name + "buy", 0);
                }
            }
        }
    }

    private void Update()
    {
        if (PlayerPrefs.GetInt(GetComponent<Image>().name + "buy") == 0)
        {
            iLock.GetComponent<Image>().sprite = falseLock;
            buyButton.GetComponent<Image>().sprite = buySkin;
        }
        else if (PlayerPrefs.GetInt(GetComponent<Image>().name + "buy") == 1)
        {
            iLock.GetComponent<Image>().sprite = trueLock;
            if (PlayerPrefs.GetInt(GetComponent<Image>().name + "equip") == 1)
            {
                buyButton.GetComponent<Image>().sprite = equipped;
            }
            else if (PlayerPrefs.GetInt(GetComponent<Image>().name + "equip") == 0)
            {
                buyButton.GetComponent<Image>().sprite = equip;
            }
        }
    }
    public void buy()
    {
        if (PlayerPrefs.GetInt(GetComponent<Image>().name + "buy") == 0)
        {
            if (Money.money >= price)
            {
                iLock.GetComponent<Image>().sprite = trueLock;
                buyButton.GetComponent<Image>().sprite = equipped;
                PlayerPrefs.SetInt("Money", PlayerPrefs.GetInt("Money") - price);
                PlayerPrefs.SetInt(GetComponent<Image>().name + "buy", 1);
                PlayerPrefs.SetInt("skinNum", skinNum);

                foreach (Image img in skins)
                {
                    if (GetComponent<Image>().name == img.name)
                    {
                        PlayerPrefs.SetInt(GetComponent<Image>().name + "equip", 1);
                    }
                    else
                    {
                        PlayerPrefs.SetInt(img.name + "equip", 0);
                    }
                }
            }
        }
        else if (PlayerPrefs.GetInt(GetComponent<Image>().name + "buy") == 1)
        {
            iLock.GetComponent<Image>().sprite = trueLock;
            buyButton.GetComponent<Image>().sprite = equipped;
            PlayerPrefs.SetInt(GetComponent<Image>().name + "equip", 1);
            PlayerPrefs.SetInt("skinNum", skinNum);

            foreach (Image img in skins)
            {
                if (GetComponent<Image>().name == img.name)
                {
                    PlayerPrefs.SetInt(GetComponent<Image>().name + "equip", 1);
                }
                else
                {
                    PlayerPrefs.SetInt(img.name + "equip", 0);
                }
            }
        }
    }
}

Skin appearance:

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

public class SS : MonoBehaviour
{
   // Start is called before the first frame update
    public Transform player;

    public void Awake()
    {
        for (int i = 0; i < player.childCount; i++)
            player.GetChild(i).gameObject.SetActive(false);

        player.GetChild(PlayerPrefs.GetInt("skinNum")).gameObject.SetActive(true);
    }
}