Show the total number of files in a SharePoint library

My users (non developers) are often complaining that it is so hard in SharePoint to show:

- The total number of files (not items) in a library

I know that its possible to see the total number of items if I go to "site contents" and find the document library there. But this includes the folders. Often people are interested how many files are there.

Is there any way to do this?

- The total number of files inside a folder

In the Windows Explorer I can right click a folder and see the number of files in the details. But in SharePoint I can only show the top level children via changing the view:

But this info is worthless for most of the people. They want to see the number of files including all sub folders. 

- Is there a way to archive this?

We have huge document libraries and it is not recommended to sync those via OneDrive client. This would be a (bad) way to archive what we need via Windows Explorer.

But there must be a way in SharePoint how to do this that does not require a PowerShell skript.

Any idea how to (easily, for normal users) do this in the GUI?