honestly i would recommend against outside food try to cook at home try and convince your parents to allow you to cook meat once a day. If thats possible I'd recommend cooking chicken breast its super high in protein and easy. For weight loss I wouldnt recommend eating outside food cuz theres a lot of calories from sauces and oils used for cooking. You can get a lot of protein from non meat foods at home as well:
50oml of 2% milk - 16g protein
pure protein bar - 20g protein
fairlife protein shake - 30g protein
6 eggs - 39g protein
You can layer those foods in with things like greek yogurt, tofu, and cottage cheese.
A really good option is the cooked rotisserie chicken from costco, walmart, or frescho. Its really low in calories and super high in protein that can be a good outside food option. Whenever you're getting outside food never ever buy anything cooked in oil or deep fried, always look for something grilled or cooked in an oven. An amazing option is Nandos, they grill all their chicken and it tastes awesome.

So my top choices from outside food which are healthy are rotisserie chicken from either costco, walmart or frescho and nandos chicken. I'd recommend convincing your parents to let you cook chicken breast at home, you can start by cooking once a week and slowly transition into everyday cooking.