Hi,
I have a pansonic tv with android tv, google assistant and remote control installed. When I speak to the remote control microphone the google assistant start (correct) but the search is always limited to youtube.
Is there a way to speek into remote control (google assistant key) and that a browser will open with the google search results?
Go to settings>device preferences> Google Assistant> Searchable apps. There you can see & enable/disable the apps the assistants uses to show search results from.
And no, there's no way to add a browser (or any other app of your choice) to the list of searchable apps. It's limited to certain streaming apps (and YouTube).