Neither will bans and prohibitions, unless you are willing to go full north korea with cameras everywhere and computers locked down. And you'll probably fail with that.
Of course you can. 20 years in prision for using Bitcoin. Not a lot of people would wanna risk that. And when 99,99% chooses to not touch it with a pole the value will collapse. Then a few people can sit there with Bitcoins that no one wants to buy from them.
Is it a good idea? Mayne not. But obviously one can crush Bitcoin if one wants.
Neither will bans and prohibitions, unless you are willing to go full north korea with cameras everywhere and computers locked down. And you'll probably fail with that.
You're beating your fists against an ocean.
Touch some grass.