I can't find the standard Microsoft Games (ie: Solitaire, Freecell) that come pre-installed in every other Microsoft Windows based computer that I own. I even looked under "Turn Windows Settings on/off" under "Programs. What's the deal?
Just like Naman R and Mike Hall said, you can get them from the Windows Store. Solitaire and Freecell are bundled together in the Microsoft Solitaire Collection and they are better looking versions of the same games you loved on previous versions of Windows.

In fact, there are 5 different Solitaire variations – Klondike, FreeCell, Spider, TriPeaks, and Pyramid.