I'm not an American. I've only been living in the US for the a few years.
Of course there's some poor reporting in the US, like anywhere else. I don't know of any European/Asian newspaper that does a better job than the NY Times or WaPo (or for that matter any good regional US paper), for all their faults, and those who are comparable are usually less widely read than the American ones.
Brazilian mainstream media is also very partisan-biased, though they won't ever admit it and always strive to come out as politically neutral.
While there's a left-centrist party in office, not one positive news is to be shown in mass media vehicles, even when the president receives an international award, the people are kept in the dark about it and you have to follow alternative news to be informed. This discrepancy has even been reported in international news before.
Government-bias may well be more common than not, or than commercial advertiser-biased. The difference between those countries and the US is consumer education. At least outside of the US the viewers / listeners / readers know they're not getting an unbiased perspective.
Of course there's some poor reporting in the US, like anywhere else. I don't know of any European/Asian newspaper that does a better job than the NY Times or WaPo (or for that matter any good regional US paper), for all their faults, and those who are comparable are usually less widely read than the American ones.