This is the Home Screen on my iPad and this is the Home Screen on my iPhone. As you can see I use Widgets to display information I want available to me at a glance. What you cannot see in this screenshot is some of those Widgets are stacked with other Widgets containing related information from the same or other apps for ready access with a flick of my finger. As to how you keep them off of your iPhone and/or iPad there are two ways I can think of:
  1. Since widgets are built into the apps delete all apps that have widgets from your device including App Store, Calendar, Clock, Contacts, Files, Find My, Fitness, Mail, Maps, Music, News, Notes, Photos, Reminders, Siri, TV, Stocks, and Weather.
  2. Switch to an Android or Microsoft device (although they probably have some form of widgets of their own)

If we knew what it was we were doing, it wouldn't be called research, would it?

— Albert Einstein