What should a good file manager application meet?

A good file manager application should have the following three functions: https://apps.apple.com/us/app/any-file-manager-viewer/id1604309599 Import files: Good file management applications need to import files into documents easily, providing many document import options. File management: A good file manager gives you full control over the organization of your data. You can create folders, tag and color code files, archive folders and many other management features. Export files: Good file management applications that cannot export files are useless. You should look for an application that can export any file to a third-party application for viewing and editing. And the application that provides the file conversion function, the better.