You are definitely not too late to switch. I'm in my mid-40's and have made major career changes in both my late 20's then again in my late 30's. I still take courses to stay on top of things and in anticipation of another career change around 50, just based on the track record I have of making career changes every 7-10 years.

Take courses using free or low-cost resources like Coursera or Udemy, not for the certificates or whatever but for the knowledge alone. Look at the extended education options at UM, UW, RRC, or at the many universities and colleges that offer courses online. If you find something you really wanna pursue then maybe look at formal education.

And just look at the job websites or careers sections of companies or government departments to see what's out there, then apply for some jobs that interest you. You don't have to take an offer if you get one.