Did you use an app to create those ringtones from your song mp3 files? If so, which one?
If you use a file manager to look in the /Ringtones directory, do you still see your custom ringtone sound file there?
Has this only happened once, or has it happened multiple times? I think I've seen this happen once or twice on one of my Pixel phones, and just wrote it off as a random glitch.
I usual put them in notification folder and haven't had them not stickIt has happened 3 times. Hasn't happened since the day after I created this post originally.
Good pointAre you using a theme? Some themes change your ringtones amd notification sound settings.
Are you using a theme? Some themes change your ringtones amd notification sound settings.