Right click on blank area of desktop now different menu

[JanetBiggar]

Hoping someone can help.  I did a new install on a laptop and while initially it showed the "usual" menu when I right clicked (See first photo), it now shows a DIFFERENT menu when I right click (see second photo).  I know it had the original menu because I changed the desktop background image. The "new" menu is essentially the same as if I click on the bottom left MENU tab. I don't know what I did to have changed this, hence I don't know how to resolve the problem.

I would like to revert to the original menu when I right click (FIRST photo in my imgur link).
here is the imgur link:

https://imgur.com/a/LtibijM