Removing the home screen number to have one more row of app shortcuts
This is not possible on Samsung's Stock Launcher but many alternative launchers have the possibility to display even more rows by shrinking them in height.

Try a third-party launcher as nearly all Samsung stock applications tend to be unoptimized for any Samsung device; especially in memory consumption.



E.g. using Nova Launcher Prime you can remove the scroll indicator as follows:



Result (the number of rows and columns of the desktop grid can be changed as you want):