In the new SharePoint admin center, you can delete and restore all the new types of sites. You can do this even as a SharePoint Administrator - you don't need to be a Global Administrator.
- Go to Deleted sites in the SharePoint admin center, and sign in with an account that has admin permissions for your organization.
Select the site you want to restore.
Select Restore. (If you don't see the Restore button, make sure only one site is selected. The button won't appear if multiple sites are selected.)
Note: Restoring a site that belongs to a Microsoft 365 group restores the Microsoft 365 group and all its resources. Note that the other group resources are retained for only 30 days, whereas the site is retained for 93.