Struggling with Insomnia and Exhaustion

Does anyone else struggle severely with insomnia? No matter how much melatonin I take or how many sleeping pills I take, I cannot rest. Even when I'm tired and can barely keep my eyes open, my mind will not shut off and I just lay there in this constant state of being out of it? like I'm not asleep but I'm not necessarily awake. If anyone says anything to me I immediately respond and I know what's going on? I don't feel rested, I have not slept well in over 3 weeks and I'm really starting to struggle getting through the day because of how exhausted I am. I've tried coloring apps and relaxation apps on my phone to unwind for bed, I've tried reading a book but I end up finishing the book because I won't put it down... I've tried video games, music, everything and nothing helps. I've struggled with falling asleep since middle school, but since I've gotten older and have gone through more trauma and abuse, sleep is nearly impossible. does anyone else that struggles with insomnia have any insight as to what I might do?