✅ Microsoft sql unable to connect. What I'm missing?

       internal SqlConnectionStringBuilder GetBuilder()
        {
            return new SqlConnectionStringBuilder
            {
                DataSource = Server,
                UserID = Username,
                Password = Password,
                InitialCatalog = Database
            };
        }

        internal SqlConnection GetConnection(SqlConnectionStringBuilder builder = null)
        {
            SqlConnection connection = null;
            try
            {
                connection = builder == null ? new SqlConnection(GetBuilder().ConnectionString)
                                             : new SqlConnection(builder.ConnectionString);
            }
            catch (Exception err)
            {
                Console.WriteLine($"ERROR::Db_Connection::GetConnection:: {err}");
            }
            return connection;
        }

                SqlConnection connection = GetConnection();
                connection.Open();