Bitcoin cannot help an entire country to deal with (hyper)inflation because it is just a payment system and is not designed to do that. But as money ie. store of value, individuals can use it instead of fiat to store part of their net worth and escape the dumping fiat value.

Inflation is not the main problem. If any country wants to fix its inflation problem they should figure out what is causing that inflation (eg. it is usually printing money with no thinking) and fix that. Otherwise no amount of bitcoin, gold or anything else can solve that issue.

Imagine a boat that is sinking slowly because there is a hole at the bottom of it where water keeps coming in. If you use a bowl to empty the boat, one bowl at a time, you are doing it wrong. The solution is to first find the problem (ie. the hole) then fixing that problem (patching the hole).

Each country you named has to be analyzed differently for example Lebanon is a small country that deals with lots of problems including instability and corruption in the government and on the other hand they are dealing with various Western organizations destabilizing it through their "bases" (NGOs and stuff like that) even more.
On top of that they are fighting two big terrorist organizations, al-Qaeda on their eastern borders and Israel on their southern borders both of which attack Lebanon regularly.
This mess obviously creates a lot of economic problems. Problems that bitcoin cannot solve!