One thing governments could do is this:

- Create a digital token system that can be exchanged and accounted freely via a centralized server.

- Give it a name. Don't even call it a currency, let people use it as money if they want to.

- Give a limited amount to any citizen who wants some. Or maybe sell it, whatever. Just figure out a way people can get some. It can't be so hard.

- Promise there will never be more than some fixed amount in total.

Only governments could do something like that because despite everything, most people trust them about money.

It'd be kind of a mixed between the different money systems.