The Journal of the AMA (American Medical Association) warned athletes long ago against taking protein supplements, stating, "Athletes need the same amount of protein foods as non-athletes. Protein does not increase strength. Indeed, it often takes greater energy to digest and metabolize the excess protein."
Anatomical signs that we are not carnivores:

Flat molars for grinding plants, not pointy teeth for tearing flesh.Oblong stomach, not round Long intestines for maximum absorption, not short intestines for rapid expulsion Alkaline saliva with amylase enzyme which breaks down carbs instead of acidic saliva with HCL for protein break down

In addition to a diet high in complex carbohydrates for energy and weight loss, the good fats are also important. These are found in avocados, nuts, and seeds, and plant oils. For a high fat, high protein and digestible lunch, try this salad: Spinach, tofu, avocado, broccoli (or cauliflower), olive oil, balsamic vinegar and fresh lemon juice.

https://letsgoforgood.com/energyfirst-review/