You're listening too much to alarmist stuff. Things may get bad. It's not likely to be the collapse of civilization. Make sure you're able to survive the continuation of civilization, since that's the much more likely scenario.
I highly doubt we're going to get past 2050 without the foundations of society collapsing.
Second: Things look ugly right now. You'd have to be blind not to see it. But the advantage of being 57 instead of 18 is that I've seen this before, and I've talked to people who've seen even more. I don't know that this looks blacker than the 1980s, when nuclear war looked like a very real possibility - not just sometime in the future, but tomorrow. I'm not sure it's blacker than the Cuban Missile Crisis. I'm not sure that it's blacker than World War II, especially for those living in Europe, Russia, or China. I'm not sure that it's blacker than the Great Depression, when it looked like society - or at least the economy - had broken permanently.
Yes, it looks bad. It is bad. It's not worse than it's ever been, though. We probably will make it through this, though it will be a bumpy ride.
If.
There's two ways to try to analyze this. One is to look from a 2019-centric perspective, where we know that nuclear war didn't cause the collapse of civilization, but we don't know whether climate change will. From that perspective, "might" looks worse than "definitely didn't". But I think that's kind of an unfair comparison.
The other way to try to compare is to look at how likely it looked when you didn't know the outcome. That's kind of subjective, so I can't really argue with your opinion if you're evaluating things the second way. To me, though, having been in both places, the 1980s frightened me considerably more.
(There may be a stage-of-life thing, too. I was 18 in 1980. Maybe the danger that you see around that age is the danger that you fear the most.)
Anyway, those are just some thoughts. I can't prove you wrong... but I sure hope you are.