> But macOS certainly doesn't come with that. I've got to manually drag the windows and edges and everything
Keep the green maximize button pressed in the app you want on the left in split screen. On the right you'll see a list of apps. Click on the one you want on the right.
Keep the green maximize button pressed in the app you want on the left in split screen. On the right you'll see a list of apps. Click on the one you want on the right.
This feature has been available for a while.