I am a very peculiar sleeper. It needs to be fairly cold (63ยฐF is ideal), with a fan blowing directly on me for cooling and noise, with a chunky weighted blanket on top of a linen sheet that allows the fan air through, one pillow between my knees and a king length pillow on both sides, then my head is sandwiched between two more pillows, with an eye mask on and noise canceling headphones to make the fan sound far away.
But I sleep like a baby under these conditions as long as I've taken my melatonin.