Be careful @OP, cryptocurrencies including Bitcoin aren't legal in Myanmar, so you must stay away against centralized exchanges since they will ask your KYC and it would harm your privacy.
How do you buy crypto?
First and foremost, you have to note that trading (buying and selling) of cryptos is illegal in Myanmar (CBM notification). If one insists on buying and holding, he or she would definitely be doing something against the law of this land.
There are few ways for you:
1. Buy through DEX or no KYC P2P, read kycnot.me
2. Direct P2P with people in your country.
Of course you need to learn how to protect your privacy (use Linux, Tor, and never share anything about cryptocurrency to public).