I am so sorry to read your post as it reads just like my life. The specific back problems might be a little different but I live in the same hell.
I have had some level of pain since 2009. It has gotten progressively worse over the years to the point that I lost my job of 23 years last September.
At this point I have had over a dozen injections and similar procedures. Some lasted a while with the last one in December not lasting an hour.
I have basically given up on any relief as I cannot afford insurance. The Surgeon could fix many of my problems but without insurance and definitely can’t afford scores of thousands of dollars to pay for them.
Luckily I was able to get my Social Security Disability on the first review that replaced about 20% of what I was originally making.
Overall life sucks with hellish pain and no real hope less waiting another 22 months to be eligible for Medicare and then hopefully surgery.
Best wishes to you and keep up the fight.