I also think a lot of "doomer" content on social media can have a significant effect if you're consuming a lot of it.
Imagine you're a teenager and you're constantly reading the most extreme takes about how everything is broken and terrible, the bad guys are always winning, you'll never find love, you'll never find a job, never own a house, never manage to have a family, etc.
An adult may have the life experience and perspective to recognize that the loudest voices aren't always 100% accurate, but a kid might take it at face value and despair.
I tried searching, but I can't find anything. =(
(I stole this meme)