it will be very difficult to make bitcoin as a currency because if the government has not legalized bitcoin it will not be able to make bitcoin into a payment tool, which is still the issue that is legality
Yes, that is difficult, but it seems the legality problem will be increasingly eroded in line with the growth of bitcoin itself. It was proven that some countries began to lift their ban on bitcoin even though they had not received it as a means of payment.
It`s happening already, we have seen many turnovers in past few years, the ones who were the most laud against crypto are now trying to get into crypto. People are slowly getting hooked on crypto, all they need to do is to try and when they see how much easier transactions can be they will start using it. Like we started using it, so will they, process is slow but it`s worth to wait.