I’m confused, are you referring to a specific app that doesn’t have a back button or do you literally want the iPad itself to have a back button?
I literally want a back button on the iPad.
The YouTube app on iOS is a perfect example. Half the time the back button is not available, or at least not immediately obvious, so when I want to go back to the list of videos from a currently playing video, it’s either not possible or a pain in the ass. On Android all I have to do is hit the back button on the phone.
That’s the YouTube app’s fault for not understanding standard iOS conventions.
You’re missing the point. On Android it doesn’t matter.