Let's remember that there used to be many more megafauna roaming the earth than today; giant sloths, woolly mammoths, tens of millions of bison across the North American Great Plains

https://www.discovermagazine.com/planet-earth/did-humans-hunt-the-biggest-animals-to-extinction

Where did they go? It seems like we ate them all.

I used to go for walks in the woods on a near daily basis. Outside of some mushrooms and dandelions, I couldn't identify any plants that would be edible for us. I guess seasonally we have wild blackberries.