I'm pretty good at hunting and gathering. Back before my broken neck and back, I was super into wanting to buy some remote place in the Appalachians and pseudo homestead. I have messed with many of the required skills. I wanted a place in the mountains with a year round creek for a water wheel, building a foundry and forge, along with a manual machine shop. I was into what I could do using junk from pick-a-part type junk yards. People often only think of parts for whatever low end car, but if you actually have a fundamental understanding of cars and the various technologies in different applications, a junk yard gives tremendous access to industrial technology for many types of machines and equipment. Junk yards are not setup for that kind of thing either. A little bit of flattery and flirting with a cashier goes a very long way when none of the collection of parts on your cart have legitimate prices on the menu.
Even with my disability now, I could probably survive in the wild by trapping game and some minor gardening if the population was low enough and I was in a decent location compared to where/when I live now in the era of the 50 year mortgage fuckwit dystopia.