If you want to quickly view your desktop without having to minimize the many windows that are open, you can do so. First, click on the Start button and click the gear icon for Settings. Then click Personalization, then Taskbar, (at the bottom). Then click to turn on “Use Peek to preview the desktop…”
Now hover your mouse to the right of the date and time and beyond the notification icon. You only need to hover, NOT click, and the desktop will come to the forefront. If you want to keep the desktop visible for a bit, click once. If you want the windows to re-appear, click again.