YOU SAID:

but unfortunately i'll never be understood

INTO JAPANESE

でも残念ながら私は決して理解されないでしょう

BACK INTO ENGLISH

But unfortunately I will never understand

INTO JAPANESE

でも残念ながら私には理解できない

BACK INTO ENGLISH

but unfortunately i don't understand

INTO JAPANESE

しかし、残念ながら私には理解できません

BACK INTO ENGLISH

but unfortunately i don't understand