Android 12 heavily centers around the "Material You" design language. This engine dynamically extracts colors and coordinates themes across the operating system. To maintain visual stability, Android 12 restricts how deeply third-party applications can alter system-wide typography without root access.
This is the most universal method for Android 12 users, especially on devices.
If you are using a non-Samsung device running Android 12, the restoration workaround might differ. For Xiaomi (MIUI 13 / HyperOS) Open the native app.