YOU SAID:

I don't get what's so hard about cancer, I'm already at stage 4

INTO JAPANESE

私は癌について何が難しいか分からない、私はすでにステージ4にいる

BACK INTO ENGLISH

I do not know what is difficult about cancer, I am already at stage 4

INTO JAPANESE

私はがんについて何が難しいか分かりません、私はすでにステージ4にいます

BACK INTO ENGLISH

I do not know what is difficult about cancer, I am already at stage 4