Where are the adverts on google news? I haven't seen a single advert there in 10 years, and I just looked very carefully in case I somehow missed them, but no, there are none.
Even within the search results, there will be ads. If you search "what happened in Canada today", Google will link some news and there will likely be a sponsored link or some form of income-generating item for Google. Then there's the data you're generating as you use Google to navigate to the content you want, which can also be sold. Google connects you to content, every dollar they make is dependent on a non-Google creator, with the exception of maybe some Maps/Earth use-cases.
The fact you think YOU need to see ads next to search related to news DIRECTLY means you don't really understand Google's modus operandi.
They make money by building a profile from your usage. And then selling that profile to advertisers. They make money by having news, because they can build a profile based on what you click and sell ads to those same websites you visit.
I do on YouTube before videos from CBC News. I actually don't on Google search results, but the search data you generate in the process of connecting with news sites can be used for a multitude of profitable uses-cases, including selling targeted ads elsewhere on the internet.