XML file not seen on pc

When I ask flywheel to open an imported wordpress site (XML) it does not see it?
Any ideas?

Create a new WordPress site, go to the Tools menu and find the Import option.

Thanks but the import page requests a zip file?
Grateful for your reply.

Try importing from the WordPress importer. It asks for an XML file.

Thanks, sees the XML file, hard drive makes lots of noises but site does not alter. Tried making a new site. Programme “Flywheel local server” won’t let me. Problem may be with “Flywheel”. Looking for another local server programme to import Wordpress again. Thanks again for you advice.