My lower back is junk
I hurt mine bad this past weekend loading a riding mower on my utility trailer. I have the beginning of spinal stenosis already in my neck region. It's still where chiropractor visits really help, but I didn't need this extra aggravation.
I've been pretty lucky till these past couple years and never had back issues. My brother in law had several discs fused many years ago and at first, said he wished he'd never done it. After some time though he said it actually helped.
I hope you find some relief. I've thought about an inversion table. Have you looked into that?