@theskyking123 how far are you away from mrblaine? His shop is probably booked for two years but rumor is he is a suspension ace if you want to spend some money.
Try one of these. I found out I had a herniated disc in my lower back about 15 years ago and was in so much pain after driving to work that I could barely stand up. This helped a ton, don't get something like this buy this one. It will feel weird at first but you'll get used to it. Physical therapy is the best thing for me when my back acts up. I'm trying to avoid surgery as long as possible. When my back is doing good I don't even use the lumbar pillow but I did use it all the time for the first few years.
This may just be my experience but contrary to your experience, going offroad helps my back. I nearly canceled a trip because I was going through a round of physical therapy but to my surprise after riding nearly 8 hours my back felt better.