Until you've actually had to outa necessity it's hard to know to a certainty. There are variables. Weather, availability of food, predatory foes and whether alone or not and my armaments. Even when you are trained well and have experience a large bear or cat can get the upper hand if you get caught staying too still in the wild.
Predators consider other non active predators as quarry. And watering and fishing and forage supremacy can be hard to establish in the wild against formidable predators without a loaded rifle.
Not sure actually If I'm in a good location I think I'll be okay probably a bit shaky frome time to time I mean if super early humans can survive so can I right? Gives me faith
Indefinitely, I'm a mountain boy. when other kids were playing with their dolls and sitting in front of TV, I was out Hunting, Fishing, and building forts in the middle of the woods...🤔