Recovering a deleted stand alone SharePoint using the admin center is quick and easy. You’ll be able to do for up to 93 days after you delete the site. If you do delete a SharePoint site using the admin center be careful that it isn’t connected to other shared resources like Microsoft Teams. if it is, then use the recommended process for removing the whole Microsoft Team not just the SharePoint.
The above will will show the process of identifying a stand alone SharePoint site, the various ways that you can delete it using the web interface and the how to restore it. Remember, you have up to 93 days to do this if you need to but you can also immediately purge the site if you need to reclaim storage space as well. It is all pretty simple and the video will run you through that process.