Adding custom sections

Hi, I just started using this theme to create a simple one-page website with 4-5 sections, which I thought would be quite straightforward. However, I see that to add new sections in the page I need to add posts, services, featured contents, etc. which have a predefined template. In fact, I would need to use my own layout/template for the different sections (creating it with the Elementor plugin for example). So what I would need is to create some "empty" sections, edit them based on my needs, and then having them displayed as sections of my homepage. Is this possible? Could you advise how to do this? Or is there a better template which can allow this kind of use? Thanks, Stefano