Got it man. When do you think they're gonna release a stable Q rom for this phone?
Maybe 3 months. But I will wait the developer release the stable version. I will use the Havoc OS Android 9 version.
In twrp, first mount 'system' partition .Then go back to twrp home, press Advanced >File manager...In file manager open folder named 'system'. Find 2 folders there; 'privapp' and 'app'. Open one by one and find in which one there is a folder named...