No option to add ringtone in the notification sounds for android 8.0

[anon(10503360)]

I'm using a galaxy s7 before and i was able to add a ringtone in my emial notification but after I upgraded to samsung galaxy s8 there is no option at all in my end and it only shows up the default sounds

 

[ManiacJoe]

Make sure your sound file is in the correct folder as appropriate:
/Notifications
/Ringtones
/Alarms

Once in the correct folder, the sound file should automatically be added to the sound picker list.