Shortcuts is such a mess. It's ridiculous having to do all the above in order to achieve such a simple thing.
This is a fundamental problem with all "point and click" user interfaces. It applies to iOS, macOS, MS Windows and Android. Users like "point and click" because it is easy to use, BUT the flaw is that if the developer did not provide an option or button to click, you can't do the function. Developers have to balance the number of buttons and menus against the ease of use. Could you imagine having 2,000 options in five layers of menus?
The old command line interface in the terminal did not have this problem because a user can always type whatever he wants and can combine apps in a nearly unlimited number of ways. If only they would study and learn the command language. Few people are willing to do that.
So what can be done? The Shortcut app tries to provide the options we have with command line interfaces in a point and click way. You can build up complex actions by choosing a series of actions and conditions from menus.
But this solution has its issues as well. Those used to a simpler "point and click" are not used to creating sequences and conditions and think it is hard and complex. Those used to typing at the terminal see it a "Dumbed Down" and clunky.
Apple tries to balance this between being easy to use and being powerful. I think they got it about right. You can learn to use Shortcuts in about an hour or so.
I just used Shortcuts for controlling the bedroom lights in the Home app. I have a motion sensor and a light level sensor, and I want the light to go to a "low" setting when a person walks in the room but ONLY if the level of natural light coming through the windows is very low. I don't need the lights on in the daytime. Then in addition, if the wall switch is operated, this take precedence over the motion sensor. It is a simple automation and the kind of thing Shortcuts can handle.