Is it traditional for native Spanish-speakers to say "Buena suerte," or is it just a traditional English phrase translated into Spanish?
Sí se usa. También "¡Suerte!" o "¡Mucha suerte!".
We also say "Que te vaya bien"
This is probably a very useful phrase to know.
You can also just say ¡Suerte!
Does this change who is saying it, or who is receiving it? Bueno Buena?
No cambia nada. :)
Is this is cognate with "sort", as in "out of sorts"? It seems to be.
Yes, though somewhat distantly, and it is also related to "sorcery." It comes from Latin sorte, ablative form of sors meaning "fate" or a response from an oracle. Sort comes from Old French sorte, which comes ultimately from Latin sors.
The first thing I thought was "Buena suéter!" (good sweater).
Where I live, I hear mostly mucha suerte. I'm curious this is related to country of origin. Most of our Spanish speakers are from Central America and the Caribbean.
Correlates with the appropriate expression in German...
Of course, that's if I believed in luck XD
Thanks. I'm going to need it to get through these language lessons.