now there are some countries that began to issue a ban on the use of bitcoin, is there any influence on the country and of course its users in economic value?
If there is a blatant ban on the use of bitcoin people who are interested in trading in bitcoin will find a way to overcome the ban ,no government can completely ban the use of bitcoin or its transactions, either they have to come up with a regulation to restrict any fraud being conducted using the platform and they should encourage strict know your customer policy so that nothing is left unturned rather than putting a restricting the freedom of any investor.
Third world countries don't understand the mechanism of blockchain and bitcoin. That's why they think banning the cryptocurrencies and crypto trading will help to keep local money circulation in the country. Ban evasion will help crypto enthusiasts to continue the trading with different softwares like VPN, proxies. Economic development is not restricted by money flow to the cryptocurrencies.