It's not "everyone" acting like it's normal. The majority of people know something's wrong they just don't have the tools to fix it. Maybe a plurality don't know that the problem is capitalism, they blame it on something else, but they're still aware there's a problem. "Everyone" is just too exhausted from working 4 jobs, 50 hours a week to scream into the void in their spare time.

And also... it's okay to not constantly be obsessing and fuming and angry about the things you can't fix. People who are living their lives, enjoying what they can, and not being angry all the time aren't necessarily giving up or burying their heads in the sand. They're waiting for their chance and keeping themselves as healthy and as ready as they can be.

Things will get better or get worse but you're in it until you die. Pick your battles so that when something falls in your lap that is in your power to change you won't be too exhausted from unproductive anger to be able to do anything about it.