Yes it is.... especially if it's not common where you live.
Also, you may need protein supplements
Discussion
I want to learn about how rich a dietary style of vegitariens can be. Eating meat is too much attractive to stop for me now.
From an Indian perspective, there's quite a variety
Vegetables: 3-4 types of gourd , okra, brinjal, moringa, cabbage, cauliflower, carrot, turnip, radish, pumpkin, capsicum, 4-5 varieties of green leafy (like spinach/mint), 3-4 types of tubers 🥔🍠, beetroot, French beans, broad beans
Legumes: Peanuts, Chickpeas, hyacinth beans, kidney beans 🫘, butter beans, lima beans, black-eyed peas, green peas, Bengal gram, 5-6 different types of lentils
Grains: Rice, wheat, sometimes corn and also traditionally barley, buckwheat, millets (like kodo millet, finger millet & foxtail millet, little millets).
Vegetarian food can have good variety and balance but it's possible only if ingredients are available