Indian government (maybe other also) say that " to ban cryptocurrency we need global help" my question is : can bitcoin be banned if all government will agree to ban bitcoin
i am something less experience and has bad english so ignore
Technically, the government may not be able to outright ban bitcoin, but they can regulate and monitor it through this means: KYC whenever a purchase is made. For example, Apple or Microsoft may have to report to the government the wallet that sent the transaction, which will definitely include the customer's details. It will also include the amount transferred.
^But the government has nothing to do if people will use BTC, we have different ways to use BTC that we did not reveal ourselves.
You will encounter KYC if you will use centralized companies just like you have said, but if you will use a decentralized platform in purchasing and exchanging BTC I think you are fine. That is why the government has no option to accept and regulate BTC than people using it illegally and they don't have a right to stop it.