Agree with DB @1559…highly recommend amstrongeconomics.com- the blog. He has a number of blog posts that address what this may look like. He thinks the pension crisis will be the precipitating event, but also believes we’re in a cycle of cooling, which will lead to food shortages independent of an economic crisis.
Agree with Daisy, too– acquire skills that can meet needs. I’ve always told my kids that you rarely have time and money at the same time, so if you have the time to learn a skill, do it. It will enable you to live better and save more.