Check the paper ' Crafting papers for publication: novelty and convention in academic writing' (2017) by Patriotta, G in Journal of management studies. There are some ten points there to consider how to structure you paper and highlight your problem and contribution. Good luck
You should write an introduction that has three sentences:
What we already know
What we don't know
What we decided to do about it (the research question in plain language)
If you can write those clearly, your introduction is simply a matter of referencing, elaborating or explaining those three sentences.
I should add that I am a health researcher, and our introductions are traditionally short and to the point. We save the lit review for the discussion. In human sciences, sentence 1 is often a comprehensive lit review, though I've noticed that this tradition seems to be giving way to the short snappy introduction model.