Formatting Compile Margins

Hello there,

I’m having a serious issue with compiling my project. The margins (both vertical and horizontal) are incredibly large and after numerous attempts to find an answer online, I’ve been unable to find a solution. Rummaging through all of the options and settings hasn’t helped either. Can anyone provide me with a little advice on how to reduce them, and preferably all files at the same time?! Because, honestly, in its present state it’s no good to send to anyone. And editing the margins in a word processor only f*cks it up. I really shouldn’t have to manually re-format everything in a WP, this is a large document and will take me hours.

HELPPP.png

An example is included above.

(PS. exporting in different file formats does not help.)