public class Database : DbContext
{
    public DbSet<Accounts> Accounts { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseMySQL("server=localhost;database=test;user=test;password=test;SslMode=None");
    }
}

using (Database context = new Database())
{
    NAPI.Util.ConsoleOutput("Database connection successful!");

    var account = new Accounts
    {
        Username = "test",
        Password = "test"
    };

    context.Accounts.Add(account);
    context.SaveChanges();
}