This is the 7606th most frequent Swedish word.
szczesny
"Szczesny" is not a Swedish word; it is Polish, meaning "happy" or "fortunate."
In this sentence, 'Szczesny' is used as a proper noun, presumably the name of a person.
Robert är vän med Szczesny.
Robert is friends with Szczesny.
Here, 'Szczesny' again acts as a proper noun, highlighting the skill of a person named Szczesny in football.
Szczesny spelar fotboll mycket bra.
Szczesny plays football very well.
This sentence uses 'Szczesny' to emphasize a particular individual's unique skill or ability.