YOU SAID:

I just got in trouble because of a lunch box

INTO JAPANESE

お弁当のせいで困った

BACK INTO ENGLISH

I was in trouble because of my lunch

INTO JAPANESE

私は昼食のために困っていました

BACK INTO ENGLISH

I was in trouble for lunch

INTO JAPANESE

昼食に困っていました

BACK INTO ENGLISH

I was in trouble with lunch

INTO JAPANESE

私は昼食に困っていました

BACK INTO ENGLISH

I was in trouble with lunch