BUT instead of ハンナ I prefer to use 花 (hana) which is a female Japanese name meaning flower. My Japanese teacher once told me katakana is usually used for foreigners, but in this case 花 works too
How do you write your name in Japanese?
If you don’t have one, you can also try using this Japanese name generator
My Japanese friends gave me a transliteration of my name (pronounced tah MEE kah) many years ago when I was in college. Funny, I started forgetting how to write it, then re-remembered it a couple of years ago when I started learning Chinese hanzi.
My Japanese name: 多美花, a lot of beautiful flowers.