When creating a new SharePoint list or document library do not modify the default view. Leave that as a baseline and create a new view by copying the view. If you are unhappy with the new view you can delete it and make a new copy from the baseline.
Secondarily, any modifications to the system page leaves a library difficult to manage as the ribbon bar does not appear. If you wish to have instructions on the page create a new page and display the library via a web part.