Where to buy bitcoin in Bangladesh?

Could you please elaborate on the options available for purchasing Bitcoin in Bangladesh? Given the country's regulatory landscape and potential challenges, I'm curious to know if there are any reliable and secure platforms or exchanges that offer this service. Additionally, I'm interested in understanding the process involved, including any necessary steps or requirements for setting up an account and making a purchase. Could you also provide any insights into the potential risks or considerations that one should keep in mind while buying Bitcoin in Bangladesh? Thank you for your assistance in clarifying this matter.