Use APKPure App
Get Immersive Mode Forcer - Xposed old version APK for Android
Force apps to use Immersive Mode. Requires Xposed
This Xposed Module allows you to force certain apps to use immersive mode. The mod includes an interface for choosing which apps should use immersive mode. You may need to reboot after adding apps to the list.
Xposed is a framework for rooted phones and is required for this to work