Vivo Mobile India — Fake mobile

Hi,
So from the starting I want to say I paid 80k for this Vivo x70 pro plus. And later I came to know that I wasted my money.
I purchased this mobile on Oct 31, 2021. I am really annoyed by the cheap quality of this device.
In Pubg even after having wifi connection and proper gaming mode, I am always comes in last even after Snapdragon 888+. This creates a bad feeling on my heart and mind.
Their are few issues as well :-
After disconnecting my headphone from the mobile, my device voice becomes heavy.
Mobile hearting a lot and even never keeps applications on background.
Ram management is really poor.
During this warranty period I had my Usb came and headphone changes because of the quality.
Even IR blaster not working.

I want my device either to be replaced with brand new one or you can give my money back.
I can't keep dust of worth Rs .80000

Thanks.