First have a look at sites such as Zedge.com which is a free service.
Once you've downloaded the sound file you like then go into Settings, Apps, Messages, Notifications, Sound and choose the sound file of choice @Alexg20
Daily Driver > Samsung Galaxy s²⁵ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
