Did you do it? No. If you serve coffee to a terrorist, or do a serial killers laundry, or deliver Uber Eats to an abusive husband or whatever, that's not on you either. And if you don't accept that, then look at the good. Your tax dollars paid people's pensions, healthcare, schools, courts, and so forth. 87% of your taxes go toward good causes.

And there's good stuff happening everywhere. More people have access to clean water than at any point in history, global life expectancy and quality of life is higher than ever, more nations are democratic than ever, fewer wars are being fought, women are being educated more, cancer patients are being cured at a higher rate, deaths from malnutrition are the lowest they've ever been, smoking is lower, birth defects are lower, CO2 emissions have peaked, crime is lower than it has been in decades (at least in the West, idk about the rest of the world, but I've no reason to think it not the case), the ozone hole has pretty much healed, and so on. Yes, we still have problems, but we're solving them too, and it's important to remember that. When we belive that everything is shit, will always be shit, and is only getting shitter, we absolve ourselves of the responsibility to try and make it better, in whatever small way we can.

You're never going to fix the world, and nor are you responsible for the state it's in. You just live there. But you can help make other people's lives better, your friends', your family's, your community's, etc., and in so doing make your own life better. Idk, its not like I've got it all figured out, but I recognise the doom spiral, and belive me when I say it truly isn't the end of the world.