Hi
achaltrehan5,
I feel this is not the experience you should be getting. Also, kudos that you are using ROG Phone for streaming on YouTube.
As per the issue that you have described, it feels more of a Hardware issue. The service center can help diagnose the issue, Let me know if you face any challenges.
Kindly visit the nearest service center:
https://www.asus.com/in/support/service-center/indiaDue to the lockdown, service centers may not be functional. Kindly call the service center before you visit one.