Ancestors: The Humankind Odyssey is a survival game developed by Panache Digital Games and published by Private Division. It was released for Microsoft Windows, PlayStation 4, and Xbox One in late 2019, along with a Steam release in August 2020. In the game, players control a lineage of primates and are tasked to ensure its survival in prehistoric Africa and facilitate its evolution. It was directed by Patrice Désilets." - Wikipedia
This title is a simulation of 'Humankind' evolution. It is not really a game.
Ancestors: The Humankind Odyssey is a survival game played from a third-person perspective. In the game, players control a member of a primate clan and have to manage the player character's health by eating, drinking, and sleeping. The game starts in an African jungle, an open world filled with threats including Machairodus, Metridiochoerus, Crocodylus thorbjarnarsoni, Adcrocuta hyenas, African Rock Python, giant Miocene otters, African buffalo, and more. Players can climb trees, and will suffer injuries if they fall down or are attacked by predators. As players progress, new areas are opened up for players to explore. When a primate is exploring new locations or being hunted by predators, it will enter a state of "fear" which can be overcome by finding glowing orbs of light, or else it will descend into a state of hysteria." - Wikipedia
There are only automatic saves but only at critical steps. After all, there are no quick-saves in real life (you don't have a save before that drive on a freeway where you got into an accident).
I have played this simulation for several weeks and have yet to survive beyond two generations. So it is hard. But I will stubbornly stay with it.
There are many walkthroughs and guides available.
Below are two videos that will give you an idea of what Ancestors is.
