If you just don't have an income certificate issued by your work unit and have a private car under your name, you can try to apply for a credit card online. Just fill in the information such as the work unit and upload a scanned copy of the driver's license. Banks can inquire about other information through credit reporting. But if you don't have information about your work unit and can't provide any information to prove that you have a stable income, it is difficult to apply for a credit card online or offline.
Of course, if you really have the repayment ability and need a credit card urgently, you can try to apply online. When you fill in the work unit, you'd better write your friend's unit. Check the information by phone at the bank, and you can confirm that you are on the job.