If you like to hide Ribbon in excel and want to more space in the worksheet, The Best thing to do is Hide the Ribbon. By Hiding the Ribbon in Microsoft Excel you can see full worksheet and also you can increase it by collapsing the ribbon.
You can do it by two ways:
1. Right click on the Ribbon and click on “Collapse the Ribbon”.
How to Hide a Ribbon in Excel-ExcelBlackbook.com
2. Use the Ctrl + F1 keyboard shortcut in Excel.