I dont know why it only works for some people, i also have an rtx 2060,
all i can say is to just ask oculus support team. Sorry, good luck on
finding a fix.
I had this problem yesterday and managed to fix it. In this forum there
are download files and steps with how to fix it.
https://forums.oculusvr.com/t5/PC-VR-Development/Oculus-app-not-working-black-window-rendering/m-p/857402#M25122To
summarize1: Do...