INSTAGRAM LOGINE - VB.Net

Imports System.Net, System.Text.RegularExpressions
Public Class Form1
    Dim cookies
    Dim w As New WebClient
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        If Not LOGIN_insta(TextBox2.Text, TextBox1.Text) Then
            MsgBox("Fuck it's not true!!")
        Else
            MsgBox("LOGIN DONE!")
        End If
    End Sub
    Private Function LOGIN_insta(ByVal pass, ByVal user)
        Using w
            Dim datainput As New System.Collections.Specialized.NameValueCollection
            datainput.Add("username", user)
            datainput.Add("password", pass)
            w.Headers.Add("user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36")
            w.Headers.Add("x-csrftoken", "massing")
            w.Headers.Add("accept-language", "en-US,en;q=0.9,ar-SA;q=0.8,ar;q=0.7")
            w.Headers.Add("content-type", "application/x-www-form-urlencoded")
            w.Headers.Add("x-instagram-ajax", "1")
            w.Headers.Add("x-requested-with: XMLHttpRequest")
            w.UploadValues("https://www.instagram.com/accounts/login/ajax/", "POST", datainput)
            If w.ResponseHeaders("set-cookie").Contains("sessionid") Then

                Return True
            Else
                Return False
            End If

        End Using
    End Function
End Class