Unfortunately this is some of the best advice. I think different people are more susceptible to existential anxiety - or moreso anxiety over things that will never be able to change or control. Some people can channel that emotion into advocacy, volunteer work, etc while others mentally drown in thought loops. As rude as it sounds, sometimes it really is a ‘touch grass’ type of thing. You HAVE to watch out for your own mental health and oftentimes that means disconnecting from triggers and focusing on your own life and interests. Play a game, watch something, read a book, go to the zoo, meet up with friends - live in the moment and outside your head. I also recommend using the internet purposefully and not just to kill time - use social media for discovery and research of specific topics and not for just general consumption.
Depends where you live! There’s weekly/monthly cannabis events where I’m at. I’ve made some great friends at them!