How to create Folders in Acrobat Reader Mobile

+++EDITED REPLY, rephrased a few explanations

Use the guidance provided by S S.

But, keep in mind that in Android-powered devices the apps that need access to a variety of system-level files and directories are interfaced through the Android's native  file manager (i.e. "My Files").

In addition,  depending on which Android operating system version you're on, the system-level file manager may need to be accessed through the storage system settings.

Otherwise it will be a little difficult to figure out what you're doing with the Acrobat Mobile app.

See screenshots below to get familiarized with how Android displays its own file manager in contrast to how the Acrobat Mobile app interfaces the same system-level structure  just slightly different.

Android's native file manager "My Files":

ACROBAT MOBILE APP file management display:

Note how the Acrobat Mobile app is designed by default to offer the user with an intuitive graphical user interface (GUI) comprised with a multi-level directory navigation menu.

It facilitates its own set of additional Cloud storage services and third-party online storage locations

So, in order to create a folder as S S. described, refer to the first slide.

1.  Tap on "My Files"
2.  Tap on "Internal Storage"
3.  Scroll down or up to find the  "Document" folder (or any other folder of your interest) and tap on it to open
4.  In the next page you'll be in the Document folder; see on the top right corner of your screen the three dots icon ("More options" menu); tap on it to open the context menu
5. Select from the context menu "Create folder" and assign a name to that folder.

Now, when you switch back to your Acrobat Mobile app, you'll be able to navigate to that new folder and save your PDFs there.

Sounds like a lot of info, but as you become savvy you'll be able to do this everyday swiftly.