Make sure you know your night rest stops.
Happened during my Everest base camp trek. On the way back after my group decided to fly back from Lukla, I decided to trek another 3 days to the next main town. On the second day after a 12 hour trek, I couldn’t find any tea houses to take me in for the night. I spent an hour asking random people if I could sleep in their huts before eventually finding a tea house for the night.