I think you might have got muddled up with the template.
If you're trying to override the view for the front-end of your website, you need to copy the view files to the front-end template. By default, it will be Protostar, not Isis
You have 5 different views with the
So if you want to override the Login view, you need to copy the PHP files from here:
and your end result will be:
Hope this helps