Why should I watch a youtube video? I've done that in practice, and as I said above, I've personally seen multiple preteen kids successfully taught to do what y

Why should I watch a youtube video? I've done that in practice, and as I said above, I've personally seen multiple preteen kids successfully taught to do what you describe on the first day they tried it, and I've seen adults do that (with guidance/advice) not "If it rained the day before" but when it's been raining for a week and is still raining, again, having not done things like that ever in their life. Yes, it takes time and effort to collect the right fire starting material in wet conditions - you might need a couple hours and a longer walk, but that's what hunter-gatherers do much of their day anyway. And yes, it takes some "wilderness lore" specific to your local environment to recognize what's suitable and what's not, what's available and in what locations. That can be transferred reasonably quickly (i.e. the very basics in an hour or so) by showing stuff on-site but not easily over a ten minute youtube video that's likely taken far away in a different environment; but again, getting to know the local flora and fauna is a big part of young hunter-gatherer 'education' no matter if they use fire or not.