At the initial phase of my career, should i focus on fully saving money or fullfill some of the dreams that i want to buy from childhood

Start buying from 2nd or 3rd year and invest from the start of your career. By doing this, you will learn discipline for investing consistently and also be somewhat mature enough when you buy your things from 2nd or 3rd year

Don't just spend for the sake of spending, you will never know when you would need money , better to have extra savings unless your have good amount of cushion already