Two things that work great with me: smoking weed & wearing a sleeping mask (a bit of light can really fuck w/ my sleep and for some reasons no US apartments seems to have real blinds).
Weed is a fairly heavy-handed solution IMO. It’s likely to help with insomnia, but also to have significant side effects. Many people enjoy some of the side effects, which is great. But many do not, which makes it hard to recommend generally for insomnia.
I usually just smoke one puff and it doesn’t have strong effects. I’m sure this would be more effective in general compared to pills, so I don’t agree that we should dismiss this advice based on “oh it’s drugs”.
Oh for sure, compared to pills (even OTC stuff with significant hangover effects like Benadryl or Nyquil), it absolutely deserves serious consideration. I would recommend trying melatonin, chamomile tea, and simple mental exercises (eg. counting from 1 to infinity) first though.