Found an up-to-date library (1) that uses Google News RSS.

The URL new format seems to be:

Top news:

https://news.google.com/news/rss

By major topic:

https://news.google.com/news/rss/headlines/section/topic/{topic}

Where {topic} is one of the following values: WORLD NATION BUSINESS TECHNOLOGY ENTERTAINMENT SPORTS SCIENCE HEALTH

By any/custom topic:

Once at https://news.google.com, browse to the desired topic, for example this. Identify the topic ID in its URL, e.g. _{CAAqIQgKIhtDQkFTRGdvSUwyMHZNR056T1hFU0FtVnVLQUFQAQ}, and use the format:

https://news.google.com/rss/topics/{id}?hl={lang}

In the format above, essentially rss/ is added after https://news.google.com/.

By geolocation:

https://news.google.com/news/rss/headlines/section/geo/{location}

Not sure about the formatting for the {location} parameter

By search query:

New link: https://news.google.com/rss/search?q={query}
Old link: https://news.google.com/news/rss/search/section/q/{query}

Where the {query} parameter is a free text search

Specifying country and language:

For example if you wish to have news in Swedish and located from Swedish sources, add the following query string to the URL to change country and language to sv-SE:
?hl=sv&gl=SE&ceid=SE%3Asv