Custom ringtones, alarms, notification sounds on Android 8.x+

Copy-paste your ogg/mp3/wav(?) file to: /sdcard/Notifications for notification sounds. /sdcard/Alarms for alarm sounds. /sdcard/Ringtones for ringtones. If they then do not show up in your System > Sound > Notifications file picker, move those folders to /sdcard/DCIM/Media instead. So /sdcard/DCIM/Media/Notifications for notification sounds. /sdcard/DCIM/Media/Alarms for alarm sounds. /sdcard/DCIM/Media/Ringtones for ringtones. If they still do not show up, reboot your phone. …