There are different arguments and approaches regarding the order in which a scientific manuscript should be written. However, some factors may influence the order you choose to write a particular paper.
Since the entire article revolves around the results of the research, I think the best way to write it is starting with the results, continuing with the introduction, methods and ending with the discussion, since the latter is related to the objectives described in the introduction, the way in which the study was carried out and obviously the results