Massive issues with sleep and desperate for a solution.

I’ve been struggling with sleep issues for over a decade now. My Doctor has prescribed me all sorts of medication, all of which has had many adverse side effects. What I do know that works, is Xanax. My wife was prescribed it for some stress issues and occasionally will give me one so I can finally sleep. Obviously asking my Doctor, “can I have Xanax” Will not go well. I’ve eluded to it in ways and the response has always been along the lines of “that’s habit forming, I’d rather you try this”. Of the many medications prescribed, none have worked. Resorting to the dark web is something I’d really rather not do. Fentanyl laced drugs took my sister and it’s a road I hope to not have to explore. Any suggestions?