The food currently available is junk compared to what our ancestors ate, and actually evolved to eat. We used to hunt (really) big game. Just look up aurochs to get an approximate idea of what the human diet actually mostly consisted of. We were such good hunters we actually hunted all of our food to extinction lol.
In reality, don't let the perfect be the enemy of the good. You can get your meat and eggs from a butcher or farmer's market instead of a convenience store. Yes, grass fed beef is the best possible food to eat, but even grain fed pork is a better alternative to industrial corn syrup, soy, wheat and, god forbid, ultraprocessed nutrition bars.
Iirc, in the Carnivore Code, Paul Saladino even compares the xenoestrogen content in soy and hormone laced beef, and found the soy simply vastly more toxic in that regard.