You can import font files from storage.
Tap the file search icon on the navigation bar.
Import and delete are done on a file-by-file basis.
-Font list
Select from imported fonts.
Long tap to enter delete mode.
-Font file
Search for "free font" in a web browser and download the font you want to use.
Supports "ttf", "ttc", and "otf". Files in "zip" format are also supported.
A "ttc" file contains multiple "ttf".
Please check the license when using a font.