I've actually found them pretty reliable. Do you have specific examples of when you found them unreliable? (They are also a good source of comms. I would be careful as well in how you judge certain stories. Some are comms. Keep that in mind.)

What are your preferred news sources?

If you want wiki, then here. I'd would use the timeline and then research the news stories from your preferred sites. The Fake News is going to leave out a lot, but if you feel that CNN or yahoo new is more reliable than that is up to you.

https://en.wikipedia.org/wiki/Yasen-class_submarine

According to 60 Minutes, unnamed Pentagon officials claimed that Severodvinsk on her maiden deployment[34] "slipped into the Atlantic Ocean and for weeks evaded all of the attempts to find her"

It's right there. The sun and the daily mail reported on it and 60 minutes reported on it. Wiki even reports on the incident. I think one of the major problems is finding truly "reliable" sources. That's why Q warned people to dig. So if you are still not convinced, I would suggest you dig for yourself. It's all there.

Kazan was rumoured to be active, along with five other nuclear submarines in the northern Atlantic in Spring 2020.[36]However, she may actually have been on sea trials since she was reported commissioned in May 2021.[37]

On 4 October 2021, Severodvinsk performed two test launches of Zircon missile, from surfaced and underwater position.[38] The launches were performed from White to Barents Sea and were successful.

I think we all would like "reliable" news sources, but they are just propaganda arms. If you're saying "I don't like this source well enough" I think that is one giant problem all conservatives face. There are many Q posts dedicated to just how unreliable the fake news is.

I do as best as I can, but sources will always have some limits. You can dig on your own if you aren't satisfied with other's work. In fact, I would encourage it.