Is Healthcare the right path and how to get employed in Healthcare (Orlando, FL)?

I'm dropping out of Mechanical Engineering to pursue a career in Healthcare. From what I've learned in this current landscape and job market, healthcare seems to be the last bastion of hope for job security and stability. I've landed on something administrative or business related, and not anything nursing adjacent, also since I wouldn't like to spend a lot of time in schooling. From what I've read, heard, and gathered tech healthcare careers are very competitive are hard to get and nursing is exhausting according to the ones I've talked to ( anyone correct me if I'm wrong, I would like to hear experiences and other perspectives). I'm thinking about doing Medical Office Specialist (MOS) since it seems specialized and quick, at least what Chatgpt can tell me lol. My universities resources for career advice aren't really helpful to me either.

Anyone know what someone in this field needs to do get a job right after a certificate or degree completion? Do you need to go to job fairs, cold DM or calls? Do hospitals have programs or job placement after wards? Do I need a portfolio of experience?

I have experience at a Health Center in medical billing and being a cashier for patients, if that helps. Does anyone know any better alternatives for my situation? What path did you go down and what would you say is best?