I figured to make it work after deleting files and such, you need to disable/enable Show lock screen background pictrure on the sign-in screen. after you do that it refresh and connect to the server again downloading new pictures. that's the thing
I was missing. it's not 100% dism command and it's not the other thing. I did everything by order.
DISM commands
Trying to change between Spotlight to picture/slideshow
Deleted the settings and other file from folder
Re Registred the Content Spotlight command from PowerShell
Restarted computer like 3 times each to make sure it's not the restart.
After doing everything I tried to switch between and still didn't work. after I switch between Spotlight and the others I cancel and enable the check box on each of the menus , spotlight and picture, after I did that the Spotlight showed an updated picture.