CCleaner does not detect/delete folders with long paths.
Some of the folders name:
2024-02-19_070129.935396inducer@DNSFailureRecovery reassoc~
com.apple.driver.AppleBCMWLANCoreV3.0
https://community.ccleaner.com/topic/32310-winapp2ini-additions/?do=findComment&comment=348551
It also doesn't delete certain registry keys either in "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001" even when the keys have been set with admin privileges and can be manually deleted in RegEdit or via a .REG file deleter. Although could be how modern Win10/11 works and a cleaning utility can't work around the fundamental failings of the OS.