If you're not happy with the default Windows file manager, you're in luck because there are plenty of options that improve on the original.
Use OpenZIM/Kiwix to archive and browse entire websites offline via .zim files. Use Zimit (web or Docker) to 'print' sites ...
Cloud storage has shifted from a nice-to-have to a basic utility, and the best apps now blend backup, collaboration, and ...
If your hard drive is nearing full capacity, you can delete your Windows temporary files to gain space back again.