YOU SAID:
I forgot to get my brother a pizza
INTO JAPANESE
私の兄に、ピザを取得するを忘れた
BACK INTO ENGLISH
To get the pizza to my brother forgot
INTO JAPANESE
私の兄にピザを得るため忘れてしまった
BACK INTO ENGLISH
I forgot to get the pizza to my brother
INTO JAPANESE
私の兄に、ピザを取得するを忘れた
BACK INTO ENGLISH
To get the pizza to my brother forgot
INTO JAPANESE
私の兄にピザを得るため忘れてしまった
BACK INTO ENGLISH
I forgot to get the pizza to my brother
it is unlikely that this phrase will ever reach equilibrium