Fair point. It sucks, but it's true.

And even them have their own biases, no such thing as unbiased journalism.

Ok, the fact that you honestly believe this is how legitimate newsrooms work is both deeply disheartening and an indication of how little the average person knows about the news business.

Editors decide what gets published, not the editorial board which is an entirely different and unrelated body that traditionally has zero contact with the content side of things. In the business we say that there is a "firewall" between the editorial board and actual news content. The NYT or WaPo would have mass resignations of their reporters if either of their editorial boards tried to influence content.

Ownership is a bit different and obviously --as we know from the Murdoch empire-- can influence content, but in traditional operations they've always been very hands-off. It's a fact, for example, that Jeff Bezos doesn't care what the WaPo publishes and has no interest in it beyond as a business concern.

Editors do have control over content, but overwhelmingly they are concerned with doing a good job and furthering their careers and professional reputations. You're completely misunderstanding the incentive structure in mainstream news media. Outside of the extremist advocacy journalism ecosystems --mostly but not only on the far right-- no one has any incentive to push an agenda and risk ruining their career by getting something important wrong.