@MargaretGR it is simple , the connection to a server is like mailing in real life .
I live in germany so when i send a package to Berlin it will take 3 days. If i send one to Moskau (russia) it will take a week and more, depends on the service i use.
A Server Connection is nothing more then digital packages who are sending from your computer to a server and are coming back. So the most europe servers for games are located in Frankfurt (germany) - Black Desert/Blade and Sould/Heroes of the Storm and so on (sometime Amsterdam location bot mostly frankfurt).
My ping because i live in germany will be a lot better than the ping of a person from turkey, russia and so on.