Lost a golf club in Dubai?

Golf in Dubai is shaped by two things you rarely find together: a very large international resident population that turns over constantly, and a climate that pushes play to the beginning and end of the day through the summer months. Residents move on — someone who leaves a club at a course in April may have relocated to another country by June, which makes the usual "call the pro shop next week" approach useless. One of the region's courses is floodlit, so evening rounds run late into the night there, with the reduced visibility that implies.

Where clubs go missing here

At bag drops and with valet handling, common at the resort courses. In buggies, standard given the heat. And during late rounds under floodlights, where a club set down beside a tee is easy to miss.

I've since relocated to another country.
Very common in Dubai and no obstacle. File in your own language — the platform runs in multiple languages and compares descriptions across them.

I played an evening round and didn't notice until the next day.
Perfectly normal. Note the approximate time; it helps whoever checks.