If you're thinking of taking a drone to Turkey or already have one there, here's a useful site explaining the regulations you need to follow.
https://uavcoach.com/drone-laws-in-turkey/Two very important facts are:
1. All drone pilots who wish to fly a drone weighing more than 500 grams must register with the Turkish government prior to flying.
2. Foreign nationality citizens cannot register as a drone pilot in Turkey. Moreover, your drone will be seized by customs unless you have received technical confirmation for your UAVs from the Turkish DGCA.