Formal:
* Dzień dobry, nazywam się Diana Lyn. (Dzien dobry, nazywam sie Diana Lyn.) - This is the most formal way to introduce yourself.
* Proszę mi wybaczyć, nazywam się Diana Lyn. (Prosze mi wybaczyc, nazywam sie Diana Lyn.) - This is a more polite way to introduce yourself, especially if you are interrupting someone or entering a room late.
Informal:
* Cześć, jestem Diana Lyn. (Czesc, jestem Diana Lyn.) - This is the most common way to introduce yourself to someone you know casually.
* Siemanko, jestem Diana Lyn. (Siemanko, jestem Diana Lyn.) - This is a very informal greeting, similar to "Hey" in English.
You can also simply say:
* Nazywam się Diana Lyn. (Nazywam sie Diana Lyn.) - This is a very simple way to introduce yourself, which can be used in both formal and informal situations.
Note:
* The Polish word "Lyn" will be pronounced "Lin" in Polish.
* Polish is a gendered language, so the word "nazywam" (to be called) will be "nazywam się" for women and "nazywam się" for men.