Displaying unwanted user names on the output

[brpsingara]

Below is my code and I want to display only "Druv" Failed logins. But, I see the user name 'None' , 'Karla' and other few names.

How avoid the unwanted users in the output

index=wineventlog source="WinEventLog:Security" sourcetype=WinEventLog:Security EventCode=4625 where Account_Name=Druv
| stats count by _time, Workstation_Name,Account_Name,dest, dest_nt_domain, product, app, action, EventCode, EventCodeDescription, Failure_Reason, name 
| sort  _time
| where Account_Name!="-"

Thanks in advance

[to4kawa]

index=wineventlog source="WinEventLog:Security" sourcetype=WinEventLog:Security EventCode=4625 Account_Name="Druv"
 | stats count by _time, Workstation_Name,Account_Name,dest, dest_nt_domain, product, app, action, EventCode, EventCodeDescription, Failure_Reason, name 
 | sort  _time

I exclude where. typo?

[brpsingara]

thank you