Dude, you need to know what a credit card is first. To put it bluntly, credit cards are used for overdraft, that is, they have no money for the time being and borrow money from banks. If you can meet your own needs, you don't need to borrow money and ask for more credit cards. Pay it back every month. Credit cards just look fashionable, but you will still use debit cards when you have money. I will definitely not be looked down upon by girls. I heard your theory for the first time ~