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...