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Browse credit cards from a variety of issuers to see if there's a better card for you.
3 bank cards are ideal for best results. Without knowing what's on your credit reports I'd look at a few prequalify sites and look into local credit unions.
Bank cards are best even secure cards that graduate will help. Store cards are ok but I'd personally would suggest store cards that you shop at.
If you have no other option yes. This is a grey area to a lot of people. I've read where you can be denied for credit if you are an AU until it manually reviewed.