I’ve been in Astana for a while and ran into the same confusion at first. What helped me was using
https://obmify.com/ru/city/astana as a reference point. It’s not an exchange itself, but it shows which services are commonly used in the city and lets you compare options without guessing. I used it before converting USDT to KZT and it helped me avoid bad rates and shady platforms. Since then, I always check available options first instead of trusting the first service I see.