I want Android TV on my Hisense

So as the title says, i want Android TV on my Hisense TV which runs Vidaa OS or some kind of shit and i just plain hate that OS because its got a browser from the 1980s and has like no apps and the bluetooth latency is horrible so i wanna use my headset with it which has a USB Dongle but that doesnt work because the OS says no and i do not know how to flash it, i do know how to get in maintenance mode tho but that doesnt really help me because there are no boot options or anything helpful at all
So anyone got an idea how to do that?