I created a site name with a typo in the name - “WIndows” instead of “Windows”.
I deleted the site and re-created it with the correct name. But it still shows with the original name - both in the site name and the URL for the site.
The behavior is expected … if delete a custom site and then create a new one with the same name, just the case changed, the old custom site name is re-used …
The only possibility is You create a new custom site with the name sligthly changed -> ‘Windows Site’, ‘Windows machines’, ‘OS Windows’, …