I am once again recommending you read theory. This is becoming a big pattern with your posts, you have doomsday predictions that are framed in the views of "good vs evil" as though those are the driving mechanisms of the problems of today. I really think trying to get a solid understanding of the way capitalism works and its contradictions will help you make better sense of the world, which can be much more comforting than relying on conspiracy theories about crypto and predictions from John the Theologian centering the idea that currency will become invalid and we will all have to run into the hills and barter to survive (as your linked post states).
Such an economy would collapse without workers, you aren't going to be hunted, capitalism rests on wage labor and needs continuous labor and circulation to keep going. What's more likely is imperialism waning as profit rates trend lower and lower and the global south seeks independence, resulting in crisis, not some even stronger oppressive capialist force that can act with any kind of coherent plan. The capitalists aren't going to run automated megafactories and hunt former workers for sport, they need workers to consume to continue the process of circulation. When circulation becomes untenable because of overproduction of goods and not enough wages to buy said goods, the system crashes. It isn't going to get stronger, it will get more desparate and violent but weaker at the same time. Fascism is a cornered, hungry animal lashing out.
Even as the capitalist world gets increasingly fascist, the way you frame the ways it will act ignore that the primary purpose of fascism is to save capitalist relations, not just to do evil for evil's sake. The way we fight fascism is fundamentally centered around organizing, not fleeing cities and trying to rely on physical currency. The mechanisms of capitalism are understandable, and as such we can move on to understand the ways it will actually decay and run into crisis, and how we can move on to socialism.
Here's an introductory Marxist-Leninist reading list that you may find helpful.