Microsoft admits a Windows 11 bug is eating up to 500GB of storage, verify if you are affected.
(www.windowslatest.com)
Fortunately I don't have this problem on any of my personal machines because I formatted all my Windows drives and migrated everything to Linux, which has been a far better experience. Running Bazzite on my gaming machine and Mint on my general use laptop. Also SteamOS on my handheld. Would recommend.