In the UAE, you can buy cryptocurrency with cash. This can be done by arriving at a crypto exchange or at a bitcoin machine. Moreover, not only citizens of the country can buy bitcoin. Anyone can do this. The main thing is to provide an identity document. Here you will learn several ways to buy bitcoin in the UAE https://minery.io/blog/how-to-buy-bitcoin-in-uae/ . You can also get a crypto wallet or buy bitcoin online.