Google Pixel 4 XL
Selecting ring tone
You can select the ring tone you want to hear when you get a call.
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Sound.
Press Advanced.
Press Phone ringtone.
Press the required category.
Press the required ring tone to hear it.
Once you've found a ring tone you like, press Save.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.