It’s something I struggle with a lot, too. I stay away from feeds and aggregates for the most part because they tend to have the most attention grabbing (ragebaut, despairbait, what have you) and just browse a handful of news sites when I want to get an idea of what’s happening at home and around the world.
To keep from doomscrolling/binge reading despair, I limit my browsing to just an hour or two in the morning (or on lunch break, downtime at work) ever couple of days or so, unless there’s a specific event that I want to follow (like Eurovision, Ukraine war update, my local election results, wildfire update etc).
I use Ground.news to see sources’ factuality/credibility and biases, and scope out topics and sources of interest.
Grist.org focuses on environmental news and are pretty consistent about having some kind of meaningful, forward -facing conclusion in their articles. Usually in the form of ways everyday folks like you or me can contribute/participate, steps toward long term solutions, that kind of thing. Personally find these additions to be helpful in lessening the aftertaste of despair I’m usually left with whenevet I read the news…
I guess my advice is 1. moderation and 2. quality sources. Easier said than done, I know, but… Good luck 🐝