If we swipe all of the OnePlus smartphone's home screens to the right, we get to the Discover home screen wizard.
Here we find Google feeds and current news topics. In addition, a search can be started using "Hey Google" or manually by typing on the keyboard.

The Google search bar and "Discover" can be disabled at any time in the home screen settings.

Android 10 | OxygenOS 10.0
Home Screen Assistant -  Tap and hold a  free area  on home screen
Home Screen Assistant -  Tap on  Home settings
Home Screen Assistant -  Enable or disable  Google
  1. Tap and hold a free area on home screen
  2. Tap on Home settings
  3. Enable or disable Google

OnePlus Instructions
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