I am fairly new to SharePoint and I have been asked to improve our company's SharePoint site. Currently I have quite a few document libraries and each document library has several views. I am looking for a way to spruce up the navigation bar on our site. Through my research I have been able to modify some code so that using a script editor web part I can have a very good looking navigation bar on the left side of the page. My problem is that in the document library I only have one web part zone called main and within that zone I can only add web parts on the top or bottom of the documents. I need to be able to either create another web part zone to the left or within the main web part zone force the web parts to the side of the documents. I also don't have access to the master page. I have tried adding a table to the main web part but that takes away the functionality of the multiple views of the document library. I have also tried to change the html/css code so that the navigation bar goes horizontally across the top but it defaults back to vertical. Thank you in advance for all of your help!
It's generally bad practice (although I admit I can provide no citation here), to add web parts to your document library page. Rather, you should create a site page, add a document library web part to it, and then customise this page as you see fit.
Essentially what you're doing currently, is heavily customising a view, and you risk corrupting the list and navigation.