Same experience here with the German DPA. Bias starts at the selection stage. Every editor selecting what is important to them or what they think is important to the readers of the media that has a DPA feed subscription.

Then when doing a write up naturally include personal point of view and experience.

If subscribing to the online xml feed like many web portals and online news sites do, the order is defined by the order of topics in the top 10 media sites in Germany (as defined by the editors of the DPA).

So selection bias, personal biases and echo chamber effects. Even with every great intention these editors have (and knowing a few they really do) it just isn't possible to have neutral/unbiased news.

At no stage of the news business.