You can customize your message notification tone according to your preference.
How to set message notification tone on Sony Xperia XA1 Ultra:
Step 1: Go to message settings.
.jpg)
Step 2: Select the notification sound.

Step 3: Choose the ringtone you desire.
.jpg)
Now you have completed the setup, wish you all success.
Check out more tutorials on Sony Xperia XA1 Ultra here