Owned for 1 weeks, 2021 75inch. It has NEVER worked properly. Half the time it 'doesn't hear me' with mic animation showing no detection, other times does absolutely nothing pressing remote or selecting icon from UI. I've updated, uninstalled, reinstalled, cleared, factory reset, toggled hardware switches on and off, powered down for minutes. It's just a joke. It won't wake up from off using voice, it won't play next episode or any other netflix commands. Sometime it just flashes a white or gray screen in response to Hey Google. And the lame advertisement video has someone saying OK Google in the first 4 seconds causing all my devices to get spammed with the ad narrator. Lame!
Are you holding down the mic button while you talk, or only pressing-releasing and then talking?