Having Oreo 8.1 why can't we delete app from screen multiple app we have to drag to the top to uninstall n much feature missing only for name its Oreo android one phone as other company with Oreo 8.1 has much then this n how to do picture in picture n spilt screen is not available can we get later in update or is the function already here
Split screen feature is already there. You have to hold the recents key to enter than mode.
The Pip mode is also there but only for video apps. It can't be applied for youtube because that's only for paid subscribers of youtube red.
Being a stock Android phone, it will only have the basic features as provided in the pixel lineup of Google.
Regarding the app uinstallation, you can try some other launcher.