Thread:Project:Support desk/missing special pages/reply

None of those pages are included with MediaWiki. You have to create them yourself. The software doesn't know what your site is about, or what your privacy policy is, or anything like that; it just provides links to them.

It also doesn't include help pages, but there's a collection of public domain help pages here on MediaWiki.org that you can import into your wiki. See Project:PD help.