Fortunately, some home screen launchers -- like the Nova Launcher -- have a built-in backup system. With the backup, you can restore nearly every Nova Launcher setting you've tweaked.

TL;DR: Is there way to save the layout of icons and widgets in Android? So if you acceidentally remove a widget, you can get it back without having to drag it back on the screen? My computer ...

One UI 7 supports fewer home screen grid layouts than One UI 6, so upgrading to the latest release could mess up your home screen.