Your phone should have some pre loaded ringtones as this is the case with all Samsung phone's.
They should be able to be viewed in Settings, Sounds and Vibration and then Ringtone.
Personally I use this route to set my ringtone or notification tone.
Settings, Apps, email / message, Notifications, New email, Sound and then choose the preferred sound.
May I ask who supplied the phone to you ?
Also can you get to a Samsung Experience Store or Samsung Service Centre as they'll be able to help you with this too.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "