Wtf insomnia whats your problem

I took double my dose of melatonin, barely slept the night before and avoided caffeine after a certain time but still can’t sleep. I’ve been laying in bed wide awake. This is utterly ridiculous and pissing me off. I have to be up in 4 hours too so I need my sleep. It honestly makes no sense but here we are. Someone sing me a lullaby or wack me with something.