Nothing non-invasive worked for me. Thank god for Lumbar RF medial nerve ablation, good for 2 years on me. Simply repeat when the nerves grow back.
An inversion table worked for my lumbar pain. First use I went straight to vertical. Felt good. I twisted around for a bit, then Pop!. Severe pain and numbness. Couldn’t stand or walk. An hour later I was fine and lifelong lumbar pain was gone. Hasn’t returned since.