Clean your PC and laptop from data garbage?

I want to free my two devices from data junk, but how do I do it, can you please help me?

You can use CCleaner

Best not with any programs like the CCleaner. You can use Windows's built-in Disk Cleanup. In this regard, also the reference to the extended disk cleanup: https://www.drwindows.de/xf/threads/erweiterte-datentr%C3%A4gerbereinigung-unter-vista-windows-7-8-10-nutzen.15633/