Answer: Because you want to wait until the next economic uptick before taking that kind of risk. You can always search confidentially, if you have the time & energy.
There’s a federal job training program that’ll pay for up to half of your OTJ training for a few months. I don’t know how to find it on the web, I heard about it from a person at the Michigan Works. If you can qualify, it may be an incentive for an employer in another field.
Knowing it exists might be a start. Good luck.