Customize tools

I just removed my Adobe Acrobat Pro 2015 stand alone and purchased the Adobe Acrobat Pro subscription. I have been using Acrobat Pro for decades and I must say that this new look is awful.  I am trying to customize the toolbars to fit my needs, yet that does not seem possible. I like too bars at the top not always on the side unless I call for them.

Where is the 'close file' because all I see is 'close application' unless there is more than one file open? And what about 'insert file'? Has that been replaced by 'attach file'? And then the recent files are only seen when I first open Acrobat. So, do I always have to search for a file toopen if I already have a file open? 

Sheesh!  Why fix what was not broke and was intuitive? Looking for any assistance.  Not sure I want to go through the tutorials to learn what I already know and not learn what I need to know. Thank you.