Can I set the reports I use the most as favourites?

Yes, of course, you can mark the reports you use the most as favourites. This way, when you access the Reports section, all the documents you've marked as favourites will appear in a prominent position, regardless of their category.

All you need to do is click on the star that appears on each report's card. By doing this, the document will be displayed at the top of the view with all your Favourites, so you can have it easily accessible whenever you need it.