google now feed
To disable the Google feed if the disable toggle disappeared just clear the App data of the Google app to make it reappear.
To disable the Google feed if the disable toggle is present but has no effect anymore you can log out of the Google app by deselecting your Google account in the "search" settings menu.
I'd spend hundreds to avoid any kind of feed in my os.
That was the nuclear option in my case. It only affects search. Good luck.