YOU SAID:

when i was with my sons friend he told me to not yell

INTO JAPANESE

私は私の息子の友人と一緒にいたとき、叫ばないように言った

BACK INTO ENGLISH

When I was with my son's friend, I told him not to shout

INTO JAPANESE

私が息子の友人と一緒にいるとき、私は彼に叫ばないように言った

BACK INTO ENGLISH

When I was with my son's friend, I told him not to shout