Here's [1] a survey from the end of 2022 asking this exact question. Across all adults, those who have at least "some" trust in the news they personally get from national news orgs has fallen from 76% to 61% in the past 6 years. While that's still a majority, and a sizable majority, it won't be for long on the current trajectory. And that's for when the bar is set to "some trust"!

[1] - https://www.pewresearch.org/short-reads/2022/10/27/u-s-adult...