How could I to add many buttons on VBoxContainer?

Godot Version

4.3

Question

I have been trying to create a game of DOMINO. To do this I created an Inherited Scene to works as stone of DOMINO using buttons, then created a Principal Scene to add the buttons into a VBoxContainer to the players click on buttons and play the game. The problem is that I can’t add the buttons in VBoxContainer because it always display just one button and does not show others. I’ve also tried to use GridContainer but it still doesn’t works
How could I fix this problem adding all buttons on VBoxContainer ?

##CONFS
@export_category("DOMINO STONES")
@export var _pedras = [
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn"),
	preload("res://DominoX/pedras/0_1.tscn"),
	preload("res://DominoX/pedras/0_0.tscn")
]
var _rng = RandomNumberGenerator.new()

@export_category("PANELS")
#@export var _panel_topo: GridContainer
#@export var _panel_bottom: GridContainer
@export var _panel_left: VBoxContainer
#@export var _panel_right: VBoxContainer

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	_rng.randomize()
	_spawn_random_object()
	
func _process(delta: float) -> void:
	pass
	
func _spawn_random_object():
	#seleciona as pedras aleatoriamente 	
	while(_controle.size() < _pedras.size()):
		var _random_index = _rng.randi() % _pedras.size()
		if(!self._controle.has(_random_index)):
			self._controle.append(_random_index)
	
	#pega pedras selecionados de 7 em 7		
	var _topo = _controle.slice(0,7)
	var _bottom = _controle.slice(7, 14)
	var _left = _controle.slice(14, 21)
	var _right = _controle.slice(21, 28)	
	
	#adiciona pedras ao VBoxContainerLeft
	_panel_left.add_child(_pedras[_left[0]].instantiate())
	_panel_left.add_child(_pedras[_left[1]].instantiate())
	_panel_left.add_child(_pedras[_left[2]].instantiate())
	_panel_left.add_child(_pedras[_left[3]].instantiate())
	_panel_left.add_child(_pedras[_left[4]].instantiate())
	_panel_left.add_child(_pedras[_left[5]].instantiate())
	_panel_left.add_child(_pedras[_left[6]].instantiate())

I already fixed it. I just changed the Inherited Scene to use only TextureButton as root instead of Node2D and it works so well.