If it’s you’re first install go with gnome since it’s intentionally simplified.
You WILL get lost in all of the customization options that are available in KDE and most xwindows environments if you have no experience w anything besides Windows or Mac
if that were all they touched, it would be fine; but i’ve lost track of the number of times i setup a linux system for newbies and got emergency phone calls that the install was broken only to discover that they clicked on some kde setting somewhere that they both forgot about and didn’t understand.
it’s sort of like people deleting the windows folder on a windows system because they don’t think that they use it.