Hi Gonzalez, Andrea, welcome to the forum!
It is a pleasure to be able to help you.
We tested this issue in our environment, and it works fine.
You can refer to the following steps:
1.Go to Settings >> Site information.
2.Click Delete site.
If the issue persists, you can also choose to delete the site in the admin center. Please refer to below steps:
1.Go to the admin center with URL https://{tenant}-admin.sharepoint.com/
(Here {tenant}
needs to be changed to your tenant's name.) And this requires a SharePoint / Global administrator account to sign in.
2.Click Active sites, search the site that you want to delete and click it.
2.Click Delete.
Hope this helps.
Best Regards.
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