To change the volume of various sounds on the Xiaomi smartphone, we will navigate to the sound and vibration settings, and we will use sliders to decrease and/or increase the volume of the following options, but in this guide we will focus on the former:

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Sound & vibration
Step 3:  Swipe  left  or  right  to set the  ringtone   volume
  1. Open the Settings
  2. Tap on Sound & vibration
  3. Swipe left or right to set the ringtone volume

Xiaomi Instructions