How to add ringtones on Android, so they appear in the ringtone menus

Try The Below Steps:

Locate music dir on the SD card (create it if not found)

Create three directories, ringtone, notification, alarms in it.

Any music files placed in these directories will appear in their respective menus.

May have to reboot the phone so they can be seen and picked.

You can also long press on a song in the songs list in the music player to add it to the ringtones.

Use Ringdroid to cut a song and use it as a ringtone.