Method of using EF to connect to MYSQL database

CREATE TABLE `user2` (
  `mid` int NOT NULL AUTO_INCREMENT,
  `uname` varchar(45) NOT NULL,
  `memo` varchar(200) DEFAULT NULL,
  PRIMARY KEY (`mid`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

using ;
using ;

namespace ConsoleApp1
{
    public class user2
    {
        [Key] //Primary key        [DatabaseGenerated()]  //Settings are increased        public int mid { get; set; }
        public string uname { get; set; }

        public string memo { get; set; }
    }
}

{
  "ConnectionStrings": {
    "Default": "Server=127.0.0.1;Database=wdb;charset=utf8;uid=root;pwd=some;"
  }
}

using ;
using ;
using ;

namespace ConsoleApp1
{
    public class DefaultDbContext : DbContext
    {          

        private IConfiguration configuration;

        public DefaultDbContext()
        {             
            configuration = new ConfigurationBuilder().SetBasePath(()).AddJsonFile("").Build();
        }

        public DbSet<user2> user2 { get; set; }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            string connStr = ("Default");
            (connStr, (connStr),null);
        }        
    }
}

using ConsoleApp1;
using System;
using ;

namespace Net5ConsoleMySql
{
    class Program
    {
        static void Main(string[] args)
        {            
            try
            {
                DefaultDbContext context = new DefaultDbContext();
                Random rnd = new Random();
                string i = (1000, 9000).ToString();
                user2 zhangsan = new user2 { uname = "Zhang San" + i, memo = i };
                user2 lisi = new user2 { uname = "Li Si" + i, memo = i };
                context.(zhangsan, lisi);
                ();

                var users = context.();
                foreach (var user in users)
                {
                    ($"{} {} {}");
                }
            }
            catch (Exception ex)
            {
                ($"EX: {}  ");
                if ( != null)
                {
                    ($"INNER EX: {}  ");
                }
            }
            ("Hello World!");
        }
    }
}