I had to reset my computer and things got messed up. It is much slower and also the wallpapers options now longer show up under 'Desktop & Screensavers.' When i try to add a folder with wallpapers it doesn't show up. I thought maybe it is a 'permissions' problem but i just found out that it isn't a thing anymore. Also, when i go to the 'Guest' option they show up if i add them. Do i have to reinstall MacOS to fix it or is there an easier fix?