Struggling with Chronic Pain and Dismissal from Doctors

My doctor has me prescribed to 400mg of Gabapentin (3× daily). My dosage is maxed out according to them. I suffer from severe nerve issues that cause it to feel like I have jolts of electricity shooting through my arm and leg. It hurts both all day and night. They refuse to put me on anything else, I was given Tramadol after my nerve surgery (that failed and caused more problems) on my arm and hand in May of 2021. I saw some people mention a drug that they considered a "miracle drug" called Naltrexone. Has anyone here been prescribed this for chronic pain? How did you convince your doctor to let you try it? I am so tired of being dismissed and ignored by doctors and nurses. I am in pain 99.8% of the time. I literally wake up, to hurt. I need help. Cannabis is not legal here in Georgia, even for medicinal use.