There are too many people confusing “Siri Shortcuts” and “Shortcuts.app”.
These two things have almost nothing to do with each other apart from some Siri Shortcuts appearing as possible actions in “Shortcuts.app”.
Weak move by Apple. They promote Shortcuts as a major new feature, you excitedly download the new iOS release, look and look to find it's not on the homescreen, you go into Settings and do a search and you wind up on Siri Shortcuts, and then spend 5 frustrating minutes trying to figure it out before doing a Google search to get informed that it's a new App and you have to download it from the App Store. Disappointing.