Google News doesn’t show recently published articles
Google News articles are time-sensitive and crawled more often than other parts of your site. In the past, it was necessary to submit a request to be included and be accepted before articles appear in Google News. But recently, Google changed this. You can read more about this on the Google News FAQ page.
If some of your recent news articles don’t show up, we recommend using the URL inspection tool in Google Search Console. Using this tool, you can find out if there is anything missing or going on why Google is not including the article.