Adopting bitcoin can mean different things for different people, some people think of this as bitcoin replacing the fiat currency of the country but I personally I see it as bitcoin being accepted as legal tender and being accepted in the country alongside fiat currencies.
I think a good candidate for this is Venezuela, Venezuela has been facing economic problems for years and even its government seems to be using cryptocurrencies to avoid sanctions, so it is possible that in the future bitcoin could be made legal tender there during the next decade.
Yes, I think Venezuela has good crypto adoption already.
As I've read before on this link -
https://www.coindesk.com/venezuela-pizza-hut-bitcoin-dashThey even are accepting dash, XPT, aside from btc as form of payment.
So maybe, they have a lot more shops or merchants that are now accepting crypto.
And we have the same opinion about adoption on a national level, I see it as being accepted as another legal tender not a competitor of their fiat.
That is the way I see it, the optimal thing to happen is that in fact bitcoin becomes the most dominant form of money and fiat currencies disappear as people lose all trust in them, but we need to be honest with ourselves governments are never going to do this and people are going to fall over and over on their traps and listen to the promises of corrupt politicians.
So the best outcome we can realistically expect is that bitcoin is accepted alongside fiat currencies and we can use it in our everyday lives, and while we still have a long road ahead I think we will get to that point during the next decades.