Gravity Forms is one of the best form builder plugins on the market. There are all kinds of extensions available for it that let you do even more with it. Take WPSyncSheets For Gravity Forms for instance: it is a handy plugin that syncs your entries to Google Sheets.
This plugin supports field mapping and conditional logic. It can manage all your entries within a single spreadsheet. It lets you create a new spreadsheet, freeze headers, select row format, change date/time format, and a whole lot more. With the Click to Sync function, you can sync all existing entries to your selected sheets.