Avoiding pessimistic content does not mean embracing ignorance. The key is to understand what is within your capacity to change and to try and let go of worrying about everything else. It's about understanding that marinating in a sea of doomscrolling is really bad for you: https://www.openaccessgovernment.org/what-is-doomscrolling-and-why-is-it-bad-for-us/143139/