Logging in to website using VBA, input fields have no ID

I tried your guys' suggestions. I suppose searching for how to use VBA with javascript code would do the trick, as that seems to be what the site is using for its text fields.

Sub ExpenseReportLogin()

    If IsEmpty(Range("A1")) Then
    Range("E1").Value = "Error: Fill In the username field!"
    End If
        If IsEmpty(Range("A2")) Then
    Range("E2").Value = "Error: Fill In the password field!"
    End If

    Dim MyHTML_Element As IHTMLElement
    Dim MyURL As String
    On Error GoTo Err_Clear
    MyURL = "bigURL"
    Set MyBrowser = New InternetExplorer
    MyBrowser.Silent = True
    MyBrowser.navigate MyURL
    MyBrowser.Visible = True

    Do
    Loop Until MyBrowser.readyState = READYSTATE_COMPLETE
    Set HTMLdoc = MyBrowser.document
    
    ' get reference to first form on page
    'Set frm = HTMLdoc.forms(1)
    
    'frm.all("USER").Value = "USER"
    'frm.all("PASSWORD").Value = "PWORD"
    'frm.submit
    
    HTMLdoc.Login.Password.Value = "MyAwesomePassword"
    
    'HTMLdoc.getElementsByName("USER")(0).Value = "USRNAME"
    'HTMLdoc.all.Password.Value = Range("A2")
    'Range("A1:A2").ClearContents
    'For Each MyHTML_Element In HTMLdoc.getElementsByTagName("input")
    'If MyHTML_Element.Type = "submit" Then MyHTML_Element.Click: Exit For
    'Next
    
Err_Clear:
    If Err <> 0 Then
    Err.Clear
    Resume Next
    End If

End Sub