You can choose Peer to Peer trading platforms, no KYC exchanges to sell your bitcoin and withdraw.
10 Non-KYC Exchanges: Investor’s Guide 2024. They listed 10 exchanges but I don't recommend Changelly as they did not have good reputation and I am not sure they already changed.
Other options can be using mixers but with expensive transaction fee through Bitcoin blockchain recent months, using mixers become more costly.
Cashing out Bitcoin from those exchanges won't make it legal. Right? Using Bitcoin and any other cryptocurrency is banned in this country. But, Thanks you suggesting non-KYC exchanges. I wish I had known the bad side of KYC when I entered the crypto space. I have been KYC'ed on many platforms already when I learned about how KYC can ruin someone's life. But, It's too late for me.
When something is done on the internet, we cannot undo this anymore. Since I have been KYC'ed already, I am still using centralized exchanges to exchange my coins. But, I do not hold Bitcoin on exchanges anymore since I learned about non-custodial wallets like Electrum. I got a hardware wallet too.