Do you want to create a Communication Site in another language? This post will show you how by creating a site with the primary language set to a language other than English using PnP PowerShell.
With document libraries, there isn't a permission level to restrict deletion of document libraries. There is the standard out of the box 'Manage Lists' permission that includes the ability to create or delete lists/libraries.
Lots of exciting announcements from the SharePoint 2018 conference in Las Vagas, but one area I started to play with is the newest sp-starter-kit project from PnP.
Learn to use the latest list formatting capabilities and apply them to existing sites with PnP PowerShell