Why won't my camera or flashlight work?

Android. LG Stylo 5. I use to be able to pull down from main screen and turn light on, now I have to ask Google? Also I just realized at bottom of screen it sez “ flashlight not available to this user"? Also, camera isn't working? I tried reboot, nothing. At one point I did get the black screen of death! Then a prompt Goole crashes but feedback under running apps just said quick search then black.please help. I've been dealing with a hacker, and it's under investigation, in the mean time?