I see that in order to categorize the FAQs by topic you created different displays for each one of the categories. This is solution however is partially correct because it can be simplified.
The thing is that the accordion display format supports grouping of nodes by a given field. In other words you can have all the different categories under one view and one display and the view will group them automatically for you.
In order to do that you can follow the following steps. I will attach a GIF right after…
- Add the grouping factor as a view field. This factor decides based on which field your nodes will be grouped. In your case the “Categorie” field
- In settings of accordion choose the grouping factor. In your case again it should be the Categorie field.
- Done. Now the view is automatically grouped by Category.
Also I notice that the page is a Landing Page which is a bit unnecessary given that you only host a view inside. So what you can do is to just create a view page, apply the settings I mention above and done! I applied the settings I mention in a clone site and it appears as the GIF below.
So no need to overcomplicate this. You can apply this fix and see if the titles and the nodes are still duplicated.