Thank you @Lewis for your help! Really appreciate it. Your answers helps me a lot and I did manage to simplified it according to my needs.

class AddToCart(BasePage):
  def select_item_to_add(self, numberOfItemToAdd=0):
      buttons = self.get_elements(AddToCartItem.Product_Item_Button)
      
      countOfItemsToAdd = min(len(buttons), numberOfItemToAdd)
      random_button = randint(1, len(buttons))

      if numberOfItemToAdd == 0:
         for selectedBtn, select_one_item in enumerate(buttons, start=1):
             if selectedBtn == random_button:
                select_one_item.click()
      else: 
         for selectItem in random.sample(buttons, countOfItemsToAdd):
            selectItem.click()