There are different ways to structure papers depending on the content. A research paper has a very definite form that you can see in many journals. All academic papers need a structure. A plan for organizing the discussion that is tied to the issues raised in the introduction Detail support and development of the ideas following the plan described. Multi-level headings can help you focus on the framework and provide guidance for your reader.
Some people work well using outlines.
They will write an outline first and then fill out the topics. For others, writing is a way of developing ideas. In either case it is important to outline the ideas before a paper is finished. This will help you review the structure and make changes to it, if necessary. In some cases, the end of the paper helps inform the beginning.