What foods should I seriously avoid? I know breads, pastas, junk food and such.
man the whole fuck bread/pasta gestalt is rubbish, carbs are just your body's energy, like petrol in a car
assuming you want to look ripped all you need to do is eat lean protein(low in fat) and healthy carbs, like rice or pasta, just make sure you're eating the good stuff and not a bar of chocolate to get your calories up. you definitely need to be eating in a calorie surplus, but get that surplus by eating the healthy stuff rather than doughnuts or chocolate
calculate your TDEE, eat around 300 calories above that daily. it'll be a pain at first tracking how many calories you're eating, but it becomes second nature after a while.
tldr: lean protein, healthy carbs, natural fats, 300 calorie surplus, bodyweight exercises