How to get credit card at 18?

Hi,
I’m a freshman in college. I want to start building my credit score and was looking into buying a credit card. I plan to purchase small amounts every month and pay it off to slowly build my credit. Apparently there was a law that was passed that won’t allow people under 21 to get a credit card without a cosigner. I was wondering if there is any way to get a credit card at 18 without a cosigner. If there is a cosigner do you still get the credit or would the cosigner?
Thanks again.

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