Sorry to break this too you but bitcoin would need to be banned by a serious amount of governments to have any real effect on energy consumption. This is by design. The wiser policy choice is to incentivize the large mining farms in your country to mine on renewables and let a digital gold exist.

The point of (good) cryptocurrencies is that they require real energy to coerce. Because of this I’ve felt safe keeping savings & transacting in bitcoin for years, I’m sorry that you don’t see that as valuable. Good luck with your ban, it isn’t smart.