Smtp error while send mail with gmail setting

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VB

.NET

Hi All,
I am using Gmail setting for sending mail, i got an error like "Failure sending mail." and InnerException as "Unable to read data from the transport connection: net_io_connectionclosed."

My project frame work is .Net 4.8
Programming Language vb
OS is Windows 11

Anything need to change in Gmail account setting ?

What I have tried:

Imports System.Net
Imports System.Net.Mail
Public Class Form1
    Public Shared Function ServerCertificateValidationCallback(ByVal sender As Object, ByVal cert As System.Security.Cryptography.X509Certificates.X509Certificate, ByVal chain As System.Security.Cryptography.X509Certificates.X509Chain, ByVal sslPolicyErrors As Net.Security.SslPolicyErrors) As Boolean
        Return True
    End Function
   
 Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Try
            System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.SystemDefault Or SecurityProtocolType.Tls Or SecurityProtocolType.Tls11 Or SecurityProtocolType.Tls12
          
            Dim Mail As New System.Net.Mail.MailMessage
            Dim smtp As New System.Net.Mail.SmtpClient
            Mail.From = New MailAddress("aravind@gmail.com", "Aravind")
            Mail.To.Add("aravind1@gmail.com")
            Mail.IsBodyHtml = True
            Mail.Subject = "Hai Testing Mail"
            smtp = New SmtpClient("smtp.gmail.com", "587")
            smtp.EnableSsl = True
            smtp.DeliveryMethod = SmtpDeliveryMethod.Network
            smtp.UseDefaultCredentials = False
            smtp.Credentials = New System.Net.NetworkCredential("aravind@gmail.com", "xxxxxxxxxxx")
            Dim userstate As Object = Mail
            System.Net.ServicePointManager.ServerCertificateValidationCallback = AddressOf ServerCertificateValidationCallback
            smtp.Send(Mail)
        Catch ex As Exception
            MessageBox.Show(ex.InnerException.ToString)
            MessageBox.Show(ex.Message.ToString)
        End Try
    End Sub
End Class

Same code with another gmail account working fine,
Note: i created app password from security tab, one account working another cant, both i enabled 2 step verification.