Usually apps, settings etc. set automatically sideways when you turn your phone horizontal and if your "Screen rotation" is enabeld.
But why does the home screen/ lockscreen does not set to horizonal view automatically as in the picture above? Always when I try it, it does not work like these:
Now, I would like to know how to set the home screen/ lock sideways generally! That means by all andrid phones of all producers with this problem.