Is there a possibility to pray towards north or south in some countries in the world? or it is always towards eastern or western directions (depending on the country obviously)?
It's commonly accepted (and often practiced) that we face Israel during the amida prayer. Details are in Orach Chayim 94. So someone in Dniepropetrovsk (due north of Israel) would indeed face south.
As always, consult with your rabbi rather than relying for practical matters on what you read on this site.