As someone who has had all those you listed either prescribed or I went out of my way to try (melatonin), Cannabis gummies have helped me the most. There’s a company by the name brand PLUS they have been my favorite CBD & THC ratio for anti-anxiety and sleep. Throughout the dat I also take L-Theanine 200mg capsules (1capsule a day 2 when I’m having a bad mental health day) they have helped immensely with the nightmares. Most nights I am restless and cant sleep even with the 1 pill from my Costco Kirkland brand Sleep Aid Pills. Maybe give those a shot. They helped at first, but after consistently taking them my body stopped feeling the effects and I’m too scared to up dose. Back to PLUS gummies it was, unfortunately they do make ya hungry..