u/YouGetDunkedOnnnnn

My English isn't that good, so I can't convey all the nuances, but here's the question. How can I build a wide back at home? They say you need to follow a diet, but I haven't done that yet because I'm not yet a minor and I don't have money for special diets, I eat what they cook, I try to eat food with a lot of pieces of meat, with protein and the like, my parents don't want to get involved, my back I'm pumping up my muscles with pull-ups with a regular wide grip and push-ups. I've been doing pull-ups for a year or two now, but I'm seeing little results.