The Loop Builder enables you to create and design the main item for repeating content (i.e. loops) such as listings, as well as customize its layout on the page. By creating a main item template yourself, you get a lot more flexibility compared to the Posts widget to design your listings and include additional dynamic content. Read these articles for all details:
https://elementor.com/blog/introducing-the-loop-builder/
https://elementor.com/help/how-do-i-build-a-loop-grid/
How to edit the Work Portfolio Loop grid?
Edit the page with Elementor - locate the Loop Grid widgets:
Click on "Edit Template" to customize the main item template. You can directly access the Portfolio Loop template from the top bar toolbar:
All of the main item's elements contain dynamic tags (https://developers.elementor.com/docs/dynamic-tags/), so they pull the individual content of each post/page:
How to edit the Work Portfolio Loop template's query?
Edit the page with Elementor > Open the Query tab of the Loop Grid, and edit the source, order, etc.
How to edit the Work Portfolio Loop posts?
Next, edit each post with Elementor:
Open the post settings and edit the "Title", "Excerpt", "Featured image", and "Tags":
Repeat the above steps to edit the second and the third Work Portfolio Loop grid: