@worridmum it’s actually theorised that most early hominids were vegetarian and some were opportunistic scavengers for meat.
If you think about it, we’d have had to have gotten pretty smart even before we got to the point of catching and killing animals. We’d have had to learn to make tools, use tools, communicate (for group hunting), teach others to use tools, make fire, understand that putting animal bodies in fire makes them edible etc. To have gotten smart enough to understand this, which is well beyond any other animals capability, something must have been fuelling our brain- plants.
Either way we’re now very capable of living on plants and we have a wide variety available to ensure all of our nutritional needs are met.