They focus on America, as such have a broadly Western bias. Are they less biased than others? Probably. But you cannot report the news without some form of bias. The act of looking at an event and deciding what facts to include and what to leave out introduces some level of bias. As it is impossible to include every detail of an event, especially in text form, you’ll end up with a biased retelling
I love ground news. But they just give you information on the bias of their sources, they aren’t unbiased themselves. You get a better picture but you are still getting it from biased sources