If you want to make the world a better place, you have to retain a headspace that actually lets you do that, and right now, the easiest fix for that is to just unplug, and then work with what you can change, which typically involves things and people around you.
Deliberation. doomscrolling without a deliberate goal in mind is not productive, because you never had a goal but to pass time. Preparation is going in, getting what you need, and coming out.
I want to learn about current events and actions going on, and I focus on achieving that, not on how stupid people are (even if it can be true), not on how nothing even matters anymore, not on how my life is hopeless. I seek knowledge, ideas, and people executing on such ideas and knowledge.
Also, for me: the less comments I read, the better. That's where my real time loss is.