how we can sell and parchase crypto like BTC etc can we deposit directly into our account because in my country BTC and all others crypto is not acceptable
i her that there are lots of 3rd party platform available for that and also online exchange company corporation
What do you mean? Direct fiat money deposit? In this case it depends on local financial services: some of them exchange crypto to fiat and fiat to crypto. In some countries local laws ban exchange hubs while crypto is not banned, so there are no possibilities to buy or sell crypto with fiat money. As for crypto to crypto exchange, I think there are plenty of online services: trading platforms, multicoin wallets etc...