I want to create game like Osu!Mania or FNF. I have Canvas and Spawner Gameobject, and Button Prefab in Assets. When I compile this code, Unity creates additional Canvas for each button.

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using TMPro;

public class ButtonSpawner : MonoBehaviour
{
    public GameObject buttonPrefab; 
    public int buttonCount = 9; 
    public float spacing = 2.1f; 
    public string[] buttonLabels = { "a", "s", "d", "f", "space", "h", "j", "k", "l" }; 

    void Start()
    {
        SpawnButtons();
    }

    void SpawnButtons()
    {
        for (int i = 0; i < buttonCount; i++)
        {
            Vector3 position = new Vector3((i-4) * spacing, 0, 0);
            GameObject button = Instantiate(buttonPrefab, position, Quaternion.identity);
            button.transform.SetParent(transform, false);

            button.GetComponentInChildren<TMP_Text>().text = buttonLabels[i];
            
            string label = buttonLabels[i];
            button.GetComponent<Button>().onClick.AddListener(() => OnButtonPressed(label));
        }
    }

    void OnButtonPressed(string label)
    {
        Debug.Log("Button YEEE: " + label);
    }
}``` 

Unity makes a Canvas automatically and because of that positions of TMpro are awful
[![Canvas is AWFUL and best](https://i.sstatic.net/B2GdVKzu.png)](https://i.sstatic.net/B2GdVKzu.png) 

I tried to use ChatGPT, but it's already broken and suggesting to create more Canvases, but doesn't work. I also couldn't find any information about that in the internet, maybe I can't search...