Fun fact, some plant like Bulgur or Lentil are almost as calorie dense as some meat. But to my understanding, they lack “complex” protein or something ? Regardless, your don't have to cut meat entirely. The issue is that we consuming way too much of it. In many developed country, eating meat every day is very common. Eating meat once or twice a week is enough to get all the right nutrient and not having deficiency in things like B12.