How to make purchases in different countries with different currencies?

Question

Unity

I already raised this question, but I still got stuck, I just can’t figure out how the purchase in the game should work correctly ...
It works for me like this - I added id products to the catalog in unity, I hung these id on the buttons, and the price is statically registered on the buttons in dollars, in the google panel I created products with the same id and the same prices, only I had to convert because they asked me for hryvnia, in general I translated and compared ....
in general, the purchase works, but it's not right ....
It should work like this - for example, a player came from Germany and his price is in euros (let's say $ 0.99 in America, and in Germany 0.83 euros), something like this ...
I think it should work correctly ...
I can’t find how to do it like that information, but information to do so as it works for me now completely ...

In general - tell me links, examples, codes, how to implement it correctly?

Ps - perhaps there was a similar question, I missed a lot, now a specific question has become ....