YOU SAID:
I would like to go on a walk
INTO JAPANESE
私は散歩に行きたいです。
BACK INTO ENGLISH
I want to go out for a walk.
INTO JAPANESE
散歩に外出します
BACK INTO ENGLISH
Go out for a walk
INTO JAPANESE
外に行って
BACK INTO ENGLISH
Go for a walk.
INTO JAPANESE
外に行って
BACK INTO ENGLISH
Go for a walk.
That didn't even make that much sense in English.