uml – Use case diagram for a web scraper

I am creating a news application as a project in which data ( the articles ) ,will be gathered and displayed on site using a web scraper.

In this project I am scraping data from different sites, storing it into database and making it view on site.
The extracted data is stored on a data base that is being connected to a back end server that feeds end points to the front end application.

My questions are:

should i have only one use case for the user since he is the only one interacting with the application ?

( there are no CRUD operations the user can only see the diffrent articles and save them or add a comment and see the diffrent comments on the article)
if not what will the diffrent uses cases be ?

Is data collection a use case?

here is a display of the architecture am using for this project

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