No, Western food is very protein rich. Vegetable products also contain more than enough protein. Among other grains, pseudogranes (such as quinoa, buckwheat or millet), legumes (such as peas, lentils, chickpeas, peanuts or beans), nuts and seeds and meat substitutes such as tofu, seitan and tempeh are good plant sources of protein. By eating a combination of grains and legumes every day, you get enough protein that together contains all the essential amino acids.
How much protein you need daily depends strongly on your body weight and the extent to which you move ( official recommendations , recommendations for athletes ). That for exceptional physical performance veganism is no problem proves numerous examples of top athletes who get their protein from a plant-based diet: Patrik Baboumian, Madi Serpico, David Meyer.