I can only say that the only advantage of doing more is that you can buy big things at once, because there is enough credit in accumulation.
But you still don’t need too many credit cards. Generally, one or two is enough. Otherwise, when you repay the loan, you will find that you don’t feel anything after using so much at once, and the card You have to remember when to repay, otherwise defaulting or forgetting will affect your credit record, which will have an impact on your future purchase of a house or other loans. Credit cards are only for occasional use when you don’t need to carry too much cash, but definitely don’t become a card slave!