On a phone the apps sit two to a row. In an app, the templates are a row you swipe through, Save in and the import button sit full width above them, and your files are rows with the name, when it changed and its version.
Download on the Android app saves the file to your phone, where Word, Excel or PowerPoint can open it.
A Word file opens as one long page, with heading, bold, italic, lists, a table, a picture, undo and redo in a bar above the keyboard. Everything typed there reaches the others as it does on a computer.
Something missing or wrong here? Tell us. A question that needed asking usually means a page that needed writing.