Amaze File Manager tools app
If you're looking for an efficient, user-friendly file manager for your Android phone, the Amaze File Manager is a great choice. This open-source and material design app is incredibly light and smooth, allowing users to work between multiple tabs at the same time with drag and drop capability. Aside from that, it has all of the basic features that you need such as cut, copy, delete, compress, and extract.
This full version of the app also allows you to opt into beta testing so you can receive updates or new features before everyone else does. It's definitely worth opting in if you want to take advantage of this feature!
Unfortunately there may be times when your files could get a little bit lost due tp technical difficulties but luckily this app also offers cloud plugin through Play Store (Amaze Cloud) or through in-app donations (Amaze Settings > About menu). You don't need to worry though since these donations do not unlock anything within the application - it's just another way for us to support future developments of this great file manager.
Overall, this is a highly recommended piece of software for managing your files on Android phones with its convenient and easy-to-use features based on Material Design guidelines. Don't be afraid to give it a try: it's quick and simple enough that even second grade students should have an easy time using it!