Except for the title your document uses only the default Normal style, and you then rely on AutoFormat to give you the formatting you want.

That is not the way to achieve consistent formatting when using Word.

Modify, or create, Styles to provide the formatting you require and then apply them to your text. If you are creating similar documents on a regular basis, you should create a template (.dotx/.dotm) to start the new documents from. It will then have all the styles as you want them, and you can include any standard text you need as well.

Learn to used Word correctly and it will work for you instead of against you.