You probably wouldn't use Bitcoin for direct payments, though you certainly could if someone else was willing to accept it. I imagine you'd primarily use it to store wealth on an open and permissionless network, and then convert it to local currency when needed to make the purchases you want.

As I mentioned, Alex Gladstein has lots of good articles outlining how people in countries that are affected by war, authoritarianism, hyperinflation, or all of the above, use Bitcoin. These are the best articles for that:

https://bitcoinmagazine.com/culture/bitcoin-financial-freedo...

https://bitcoinmagazine.com/culture/cubas-bitcoin-revolution

https://bitcoinmagazine.com/culture/can-bitcoin-bring-palest...

https://bitcoinmagazine.com/culture/bitcoin-a-currency-of-de...

You transfer btc to someone else and they give you your purchase.

How do I transfer that money? I need specifics.

I'm a poor peasant from Wallachia, I barely know how to use a smartphone. ELI10.

1. How do I buy the Bitcoin in the first place? My government or bank aren't selling them to me.

2. How do I actually transfer that money?

Yeah... if you barely know how to use a smartphone Bitcoin isn't going to be much help to you, unless you learn.

That doesn't mean Bitcoin isn't already helping millions of people in these types of countries that have unstable currencies, governments, or both, but also have wide spread internet and smartphone adoption.

Read the Alex Gladstein articles I mentioned above.