@daisy22 I saw this comment you posted in another discussion,
"I had an MRI that shows levels of herniation and bulging at all levels of the spine plus spondylolisthesis at L5-S1 but since the cortisone shot relieved my back pain for 2 days that means my spine is fine."

Spondylolistesis means that one vertebrae is slipping past another, in this case L5 is not staying where it should be over the sacrum. The question is how far is that slipping and what is getting pressure when that happens? Yes, there can be other problems that can cause the same pain symptoms and that makes it easy to miss something unless you look at everything. Pain could be coming from more than one place at the same time. If you had surgery for one problem and it didn't fix everything, it would look like a failure on the part of the surgeon, and they want to avoid a poor result. I had that happen to me when I had carpal tunnel surgery on my wrist and still had arm and hand pain because the surgeon completely missed that I also had thoracic outlet syndrome. He treated me badly after that and wanted nothing to do with me.

I do not think that 2 days of relief from a cortizone shot means your spine is fine. I don't know where the injection was, but I had a spine epidural injection in my neck that relieved my pain for 5 days, and then it started to return. This buys a little bit of space by reducing inflammation temporarily. I had pain all over my body from spinal cord compression in my neck and did not have any other source for this pain. The doctors mistakenly thought it should come from the lumbar spine only because they didn't understand that pain could be generated in the neck that would cause pain in the legs. I found medical literature with a case like this, and my case was the same, and what predicted it was a spinal epidural that resolved pain temporarily. The surgeon who ordered the injection thought it would prove there was a problem somewhere else, and when that didn't happen, he ignored the results of the diagnostic injection.

This story is about a patient with instability at L5 S1 and this is the surgeon who did my spine surgery and who also understood the condition of "Funicular pain" where pain can be generated by the cervical spine and referred elsewhere in the body. All the other surgeons (outside of Mayo) who saw me, missed this. I posted the information about funicular pain earlier in this discussion in the article about "sciatic pain like symptoms."
https://newsnetwork.mayoclinic.org/discussion/sharing-mayo-clinic-spinal-surgery-saves-teen-swimmers-mobility/
If you can go to Mayo and see Dr. Fogelson, you could get an honest evaluation and an opinion about the extent of your spine condition.

Do you think Mayo is an option? Check the Billing and Insurance page to see if they accept your insurance if you wish to seek an appointment.
https://www.mayoclinic.org/patient-visitor-guide/billing-insurance