How to turn off the notification sound on Iphone 12?

How to turn off the notification sound of iPhone 12 application? To turn off the iPhone 12 application notification sound, please follow the following steps:

1) Open the phone settings and click the notification option in the settings menu.

2) After opening, drop down to see the application list, click the application that needs to be closed, and turn off the switch corresponding to the sound on the settings page. (as shown in the figure below)