Hi Th_Aaron,
Welcome to the Apple Support Communities! I'm sorry to hear you are having these concerns regarding your iPhone. If you are having storage management issue, you may find the information and steps noted in the following article helpful:
Check your storage on your iPhone, iPad, and iPod touch - Apple Support
Note that Documents & Data is a category of data, not a single file that can be deleted. It may include, amongst other things:
Documents & Data: Safari Offline Reading List, files created within apps, and app content like contacts, calendars, messages, and emails (and their attachments)
You may instead want to look at the storage usage for individual apps to find out what may be using the most storage and what you might want to delete.
Regards