Ocean acidification tipping point, climate change tipping point, rose of wars and fascism, microplastocs - these are just facts of things that are happening. I feel like doom scrolling would be an exaggeration of things that are happening or will happen, not just reading about reality.
Doomscrolling is scrolling through your phone wallowing in depression/anxiety about these things. Moderate your news intake, spend some time doing mutual aid, ice watch, whatever appeals to you, and get more sleep.