Your  mac icons can be hidden  in a number of ways. To hide your files from
the desktop, you can use the free hiddenMe apps, the terminal command, or an
Apple script editor. Read below for instructions on how to use them. 

Note:  These
methods have worked on my 2017  MacBook
pro  running macOS Mojave and other
Macs running macOS Sierra and macOS High Sierra, so they should work on your
Mac too. 

Read the full blog here: https://www.soldrit.com/blog/the-easiest-way-to-hide-desktop-icons-on-mac/