Is it possible to withdraw bitcoins to bank account
Certainly, there would be a process. You need to convert yoyr bitcoin into fiat money first then encash it to your bank account.
Like here in my country we use our own based web wallets where we can easily sold our nitcoin and deposit our money directly into our bank account no meed to exchange it into fiat if you had web wallet that based on your country used that to sell out your coins :$