[little jeremiah]

Lower back out for a long time, messing with nerve, cascading effects.

[Tennessee Conservative]

Is it spinal stenosis?

[Steve Van Doorn]

I can't find the one I have. Though these Piezoelectric sparks give temporary pain relief. Similar device that lights your BBQ.
Trigger Point Stimulator Tool

This is what saved my lower back after a mountain bike accident. Though you have to know were to hit. (one time was fixed)
Chiropractors takes an X ray. But it's actually done by feel. if the vertebrae feels slightly off push it back in. You can do it with someone else thumbs, elbow or palm of hand with a lot of pressure but if that doesn't work this hammer has more force.
https://www.amazon.com/Chiropractic-Activator/s?k=Chiropractic+Activator

[Steve Van Doorn]

said, "Lower back out for a long time"

The problem with moving an old vertebrae back to where it should be. The body compensates creates growth to the new position. Meaning when you where first hurt was the best time to put it back into position. Good luck