Put yourself in their shoes. No gun. Perhaps some arrows and spears, taking on a Mammoth. If given a choice....I’d pick rabbits, fish, and deer. The last thing on my mind would be spending a Friday afternoon hunting up a herd of the woolly beasts.
They probably hunted them like Africans did 3-400 years ago_ gut wound them and then track them for a week until the elephant died. While not safe, two or three people could feed a village for a month.
beat me to it....if all I had was spears, I’d be nuts to go after anything bigger than a dog...If they hunted mammoths that explains their demise