Throwing GDPR and `ftw' in the same sentence. Hmm. No GDPR does not work that way hah. At least not in the global context.
GDPR only applies to you _if_ you happen to be a European Union citizen.
There's nothing in GDPR that has anything to do with EU citizenship.
1. GDPR applies to the processing of personal data if the controller or processor is "in the Union", regardless of where the person whose personal data is being processed resides, and regardless of where the processing takes place.
2. It applies to any data subject that is "in the Union".
All the places in it that you might have expected it to say "Union citizen" instead say "in the Union".