Guide

1. Inside the main dashboard of your SharePoint site, head over to the left-side panel and click the site library you wish to delete.

2. After that, tap the 'Settings' icon at the top-right corner.

3. Choose 'Library Settings' from the list of options.

4. Subsequently, click 'More Library Settings'.

5. Find and click 'Delete This Document Library' under the Permissions and Management section.

6. After completing these steps, the selected site library will be deleted immediately.