Obvs i dont know what your vet had to say, but the vets i work with weekly often advise not having a raw diet as dogs arent designed for human highly processed foods so its not great for their digestion long term. Meat, either as it is, kibble, or tins/pouches are what dogs are supposed to live off. Thats not to say they should only have that, i have a collie who we feed twice daily with biscuits, tinned meat and any spare boiled vegetables from our meals. But it is very important to make sure you dont give any poisonous veg like onions, its awful seeing dogs come in as an emergency needing to be made sick. Hopefully that will never happen if youre careful! Also, ive seen some cases where they have developed allergies to certain human foods, one i saw had an awful skin condition that resolved when put back onto a normal meaty dog diet. Any new changes should of course be introduced very gradually to ensure no stomach upsets. Potatoes, rice and pasta are often safe to feed no problem 😀