Cannot figure out how to get the name of selected item in my inventory system

Questions & Answers
1

I have created an inventory system, following a great tutorial I found on Youtube using scriptable objects :Unity INVENTORY: A Definitive Tutorial - YouTube
What I want to do is figure out if the item in my currently selected slot has a certain name (eg “Pickaxe”), and if so enable the item under my player using .SetActive.
Here is my code:

INVENTORY MANAGER SCRIPT

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

public class InventoryManager : MonoBehaviour
{
    public static InventoryManager instance;

    public Item startItem;

    public InventorySlot[] inventorySlots;
    public GameObject inventoryItemPrefab;
    public int maxStackAmount;

    int selectedSlot = -1;

    private void Awake ()
    {
        instance = this;
    }

    private void Start ()
    {
        ChangeSelectedSlot(0);
        AddItem(startItem);
    }

    private void Update ()
    {
        // Keyboard
        if (Input.inputString != null)
        {
            bool isNumber = int.TryParse(Input.inputString, out int number);
            if (isNumber && number > 0 && number < 9)
            {
                ChangeSelectedSlot(number -1);
            }
        }


        // Scrolling
        float scroll = Input.GetAxis("Mouse ScrollWheel");
        if (scroll != 0) 
        {
            int newValue = selectedSlot + (int)(scroll / Mathf.Abs(scroll));
            if (newValue < 0)
            {
                newValue = 7;
            }
            else if (newValue >= 8)
            {
                newValue = 0;
            }
            ChangeSelectedSlot(newValue);
        }
    }

    void ChangeSelectedSlot (int newValue)
    {
        if (selectedSlot >= 0)
        {
            inventorySlots[selectedSlot].Deselect();
        }
        

        inventorySlots[newValue].Select();
        selectedSlot = newValue;
    }

    public bool AddItem (Item item)
    {
        // Check if any slots have same item with count lower than max
        for (int i = 0; i < inventorySlots.Length; i++)
        {
            InventorySlot slot = inventorySlots[i];
            InventoryItem itemInSlot = slot.GetComponentInChildren<InventoryItem>();
            if (itemInSlot != null && itemInSlot.item == item && itemInSlot.count < maxStackAmount && itemInSlot.item.stackable == true)
            {
                itemInSlot.count++;
                itemInSlot.RefreshCount();
                return true;
            }
        
        }


        // Find empty slot
        for (int i = 0; i < inventorySlots.Length; i++)
        {
            InventorySlot slot = inventorySlots[i];
            InventoryItem itemInSlot = slot.GetComponentInChildren<InventoryItem>();
            if (itemInSlot == null)
            {
                SpawnNewItem(item, slot);
                return true;
            }
        }

        return false;
    }

    void SpawnNewItem (Item item, InventorySlot slot)
    {
        GameObject newItemGo = Instantiate(inventoryItemPrefab, slot.transform);
        InventoryItem inventoryItem = newItemGo.GetComponent<InventoryItem>();
        inventoryItem.InitialiseItem(item);
    }

    public Item GetSelectedItem (bool use)
    {
        InventorySlot slot = inventorySlots[selectedSlot];
        InventoryItem itemInSlot = slot.GetComponentInChildren<InventoryItem>();
        if (itemInSlot != null)
        {
            Item item = itemInSlot.item;
            if (use)
            {
                itemInSlot.count--;
                if (itemInSlot.count <= 0)
                {
                    Destroy(itemInSlot.gameObject);
                } else
                {
                    itemInSlot.RefreshCount();
                }
            }
            return item;
        }

        return null;
    }
}

ITEM SCRIPT

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

[CreateAssetMenu(menuName = "Scriptable object/Item")]
public class Item : ScriptableObject
{
    [Header("Only gameplay")]
    public TileBase tile;
    public ItemType type;
    public ActionType actionType;
    public Vector2Int range = new Vector2Int(5, 4);

    [Header("Only UI")]
    public bool stackable = true;

    [Header("Both")]
    public Sprite image;
    public string name;

}

public enum ItemType 
{
    BuildingBlock,
    Tool
}

public enum ActionType
{
    Dig,
    Mine
}

SCRIPT ATTACHED TO PLAYER TO ENABLE/DISABLE PICKAXE

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

public class PlayerInventoryManager : MonoBehaviour
{
    public GameObject pickaxe;

    void Start()
    {
        pickaxe.SetActive(false);
    }


    void Update()
    {
        Item recievedItem = InventoryManager.instance.GetSelectedItem(false);

        if (recievedItem.name == "Pickaxe") // We are holding pickaxe
        {
            pickaxe.SetActive(true);
        } else if (recievedItem.name != "Pickaxe")
        {
            pickaxe.SetActive(false);
        }
    }
}
2

Soo what is the exact question?