That stone - the big one - looked worked until I looked closely. It should have what knappers call "alphas" or "platforms". In a lot of cases, the very old pieces show more workmanship than later Woodland stuff. It seems that making stuff changes as agriculture settled into cultures. Or vice versa.
But they are flakes. And flakes are worked. I would love to see them closer and sometimes you can see the point - a bubble - where the shock actually connected to break the flake off. As our fellow hunter said, keep looking. You are in a good place.