How do you avoid being in a bubble? Usually of your own creation. Whether it is curating the subreddits you see, or selecting the news sites you visit, you are only ever going to see a tiny fraction of what's going on in the world.

I skip pretty much all the political and news subreddits and stick to the focused communities that match my interest. Things like r/3dprinting, or r/omscs, etc. I find most communities are decent as long as they're not enormous. Any significant political content and I bail, I am just too tired of being reminded how horrible many people are.