YOU SAID:

im walking here forget about it

INTO JAPANESE

イムはここを歩いてそれを忘れる

BACK INTO ENGLISH

im walking here and forgetting it

INTO JAPANESE

私はここを歩いて、それを忘れて

BACK INTO ENGLISH

I walked here and forgot about it

INTO JAPANESE

私はここを歩いて、それを忘れてしまった

BACK INTO ENGLISH

I walked here and forgot about it