Download and Install Fonts for Samsung Galaxy Phones for OneUI Android 9 Pie or earlier
How to add Custom Fonts in Android - GeeksforGeeks
How to Change Fonts in Android
To all custom-font enthusiasts, rejoice. The great people at xda figured out how to implement custom fonts on all OneUI variants. You can even use custom TTF files. [Source in replies] :
How To Install Fonts On Android - MasterBundles
GxFonts is a custom font manager for Samsung Galaxy devices on Android 7.0+
How to easily Install any Font on Samsung Galaxy devices? - Download Unlimited Fonts!
Adding a substitute font to Xodo for Free Text : XODO
How to install fonts on Android the easy way - Android Authority