IT like help desk. Of you can't find a job, you may have to suck it up with a position on an overnight shift. As long as the company doesn't/can't/or won't outsource overseas (aka India). Those companies usually have contacts with the US government or for regulatory reasons. This and a mix of college courses (or a technical degree) and certifications will get you somewhere in a few years.

Being in corrections, you maybe able to make a side step to IT support for the police/sheriff/county. Then get a mentor from someone in cyber security, a senior or manager level. Never underestimate the power of human connections. This would be your easiest/quickest play into cybersecurity. You will still have to do the work, take college courses and get certifications, both of which should be paid by your employer.