Long ago I started a #newsdiet for my #mentalhealth. It's been helpful. I do it by carefully choosing my sources and reading my news in an RSS / feed reader.
Unfortunately, curating on a source level isn't granular enough. I still get too much toxic news, and too little of some topics I want to see.
The missing topics - e.g. politics - tend to cluster with toxic news, so I don't subscribe. But then I cheat, checking in on the sites themselves, and get exposed to toxic news anyway.