It is written, Virtual memory lets your pc run multiple apps at the same time and Hibernation file lets your PC sleep while maintaining your user state. Temporary files size is 21.5 GB which was really unexpected. System files is using 17.2 GB, Virtual memory is using 2.06 GB and Hibernation file is using 4.76 GB. In System & reserved, I see System files, Virtual memory and Hibernation file.
System & reserved, Temporary files, Apps & features, Other, Other people, Documents, Pictures, Desktop, Music, Videos, Mail, OneDrive and Maps.
When I turn on Storage Space for C drive, I see various categories as