I think you can still buy and sell bitcoin, but you need to deal anonymously, you can try to use perfect money and deposit, you can exchange your perfect money to bitcoin in any exchanger listed here
https://perfectmoney.is/business-partners.htmlBefore I am using changer.com, but I don't know they are still safe, but you can use other exchange sites from perfect money exchanger list just choose high trust score so that you are safe to exchange your perfect money to bitcoin.
Then, if you couldn't trade online in any exchanges because your internet provider blocking any bitcoin related website and exchanges just use a VPN or buy VPS account so that you can browse anonymously using your own VPS account and VPN/
Make sure that you are using VPN with Socks5 so that you are safe.