So I say GG after I lose and after I win.
But only if you earn it.
If you are bad or a noob and you beat me by luck then no.
It was probably a fluke. (Whether by me or them doesnt matter.)
If you are good at the game or I see potential in you and then you beat me then I say GG.
If I beat you I say GG regardless.
Basic respect is given.
Respect in large part is earned though.