System volume level settings file path in Android

I am trying to find where Android stores the settings of volume level values. It should store it somewhere in /data because when ROM is dirty flashed, the volume level settings are persisted which means it has to be stored in /data. For information, I am using MIUI 13 based on Android 12. And why I am trying to find this is because the ROM is resetting system volume settings on reboot. So I thought of hard coding the system volume level where it is read from to solve it for me. But I couldn't find where it is stored.