Photoshop 2022 Won't Launch due to Scratch Disk Error
App: Photoshop 2022
System: Lenovo Flex 14 laptop, Windows 10
I am not able to open Photoshop because the launch is interrupted by an error that tells me my scratch disk is full. 
I clicked the 'learn how to fix' hyperlink and read the suggestions in this article: https://helpx.adobe.com/photoshop/kb/troubleshoot-scratch-disk-is-full.html?trackingid=88X75MY1&mv=in-product&mv2=ps#
But none of it worked. I tried Disk Cleaner. It doesn't give me other disks to choose from as seen in the screencap, I can't do anything in the preferences because this error is preventing PS from opening and using Control + Alt + Shift to reset the preferences did not work.
I'm not savvy, I don't even know what the hell a scratch disk is. How do I fix this?
