My experience is that CBD works better for pain when combined with THC, or rather a full spectrum cannabis product that is not isolated. I'd suggest that if CBD alone is not working for pain, try it in combination with some THC by using a 1:1 tincture or gummie. You could also combine CBD flower with THC flower in different ratios to potentially get more analgesic benefits from cannabis. Cannabis is medicine, but it does not work for everyone.