Ditto the multiple posters who have asked what types of jobs you applied for. If you really want strangers on the internet to tell you why you're unemployable, we need just a SMIDGE more information than 'I have an associate's in nursing and I live in Florida'
1. Are you only applying to hospital jobs? If so, you need to pack in some home health nursing, nursing homes/rehab centers, etc.
2. What kind of school did you go to? Did you get an online degree from a barely credited school, did you go to community college, somewhere else?
3. How were your grades in nursing school?
4. How big was your graduating class, how many of them do you keep in touch with, and how many of them are employed?
5. If so, in what types of care areas are they employed, and how long did it take them to find employment?
6. What did your job history look like before you got your RN? Do you have any healthcare experience as a CNA or EMT or anything? Does your employment history show that you are able to hold down a job for a period of time?
7. Feel free to post your resume here, I'd be happy to take a look. Just blur out the personal data.
There is absolutely a nursing shortage. There are also areas where the market is supersaturated. You can be sure you'll always have a job as a nurse...if you're willing to go where you're needed. Radio ads leave that last part out. The shortages aren't always in the acute care setting, in your county, or even your state. It's expensive to train a new grad, pure and simple, especially with so many young new nurses only trying to get a job for 1-2 years so they can go back to school for NP and quit their jobs. Employers in areas without a shortage can afford to be picky: get RNs with BSNs, experienced RNs, RNs certified in their care area.
I'm sorry again that you haven't had luck finding employment and if you want to answer a few simple questions to help us help you, we'll be here.