I have severe back pain caused by severe scoliosis. I’m 76

Has anyone experienced severe chronic back pain caused by scoliosis which has worsened over time? I was 14 when I was diagnosed and the only option was a spinal fusion and a body cast for 9-12 months and living in a special hospital for that time. Or I could do special exercises which didn’t do much. I wasn’t in any pain for years but as I reached my mid 60s I was diagnosed with Osteoporosis and then it was still a few years after that that I had Kyphoplasty for a compression fracture of my L3.
Felt better for a few months, then the pain got worse and it felt muscular. The worse it got the more sedentary I became because standing up straight just to do light kitchen work or sitting without a couple of pillows on my lap is excruciating. I’ve missed so many important family moments and events. I did PT two different times but the last time I did feel like the therapist was really listening to me. I’ve had target injections by one “pain therapist “, which did nothing. And a second “ pain doctor “ sent me to a scoliosis specialist who basically said surgery or a very cumbersome and expensive brace which would be tight across my stomach, which I couldn’t tolerate due to other G I problems. Currently, I take 2 extra strength Tylenol twice a day 8 hours apart. I was taking ibuprofen 800 mg every 6 hours which caused me to have a bleeding ulcer. I do take Gabapentin 300 mg 3x day and 600 mg at bedtime but that was ordered for peripheral neuropathy in my feet and lower legs. I used to be so active and I want to be at least able to walk , stand and sit without this pain. It just drains me. Any suggestions would be greatly appreciated.
Brenda