Hi! The links that are displayed under your main search result (below the site title and description) are called “Sitelinks”.
These links are what Google believes are the most useful pages of your website.
This topic was a bit discussed here: How to get website pages in Google search result correctly
As a best practice, Google recommends to: “Make sure that the text you use as your page titles and in your headings is informative, relevant, and compact.”
You can read more about Sitelinks here: Présentation des liens sitelink | Google Search Central | Documentation | Google Developers
Hope this helps!