I’m turning 21 soon and I’m looking to open a savings account with a bank that provides pre-approved credit card offers. I'm willing to maintain a minimum average balance of 20-30K. My goal is to build my credit score while earning some cashback rewards in the process. Should I opt for a secured credit card upfront, or is it better to open the account first and then wait for a pre-approved offer? I’d appreciate your advice on this