Error when creating a CRUD in ASP.NET Core MVC with Entity Framework?

Question

I am new to programming and am creating a CRUD in ASP.NET Core MVC with Entity Framework, SQL Server database, through an Internet tutorial, downloaded the blessed nugets packages, which are:

Microsoft.VisualStudio.Web.CodeGeneration.Design
Microsoft.EntityFrameworkCore.Tools
Microsoft.EntityFrameworkCore.SqlServer

After I created the controller, I was testing to see if the data (CRUD) appeared on the site but nothing, please, someone could help me?

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Threading.Tasks;

namespace CRUDProdutosASPNETCoreMVC.Models
{
    public class Produto
    {
        [Key]
        public int Produto_id { get; set; }
        public string Nome { get; set; }
        public string Descricao { get; set; }
        public int Quantidade { get; set; }
        public decimal Preco { get; set; }
    }
}

---

using CRUDProdutosASPNETCoreMVC.Models;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace CRUDProdutosASPNETCoreMVC.Data
{
    public class ApplicationDbContext : DbContext
    {
        public DbSet<Produto> Produto { get; set; }
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder
                .UseSqlServer(@"Server=DESKTOP-DJRCE3V;Database=DBAppSample;Integrated Security=True");
        }
    }
}