If you don't have documents to prove your repayment ability, such as work certificate or income certificate, in this case, if you have a large deposit in the bank and reach a certain customer level, you can also apply for a credit card. Whether you can do it yourself depends on your deposit. If you meet the standard, the bank will let you apply for a credit card.
It depends on the bank's policies, and even the policies in different regions are different, but a little less than 3W is not very helpful for handling credit cards.