YOU SAID:
My leg is broken because i was dumb
INTO JAPANESE
私は愚かだったので、私の足は壊れています
BACK INTO ENGLISH
I was stupid so my leg is broken
INTO JAPANESE
バカすぎて足が折れた
BACK INTO ENGLISH
I broke my leg because I was so stupid
INTO JAPANESE
バカすぎて足を骨折した
BACK INTO ENGLISH
I broke my leg because I was so stupid
That didn't even make that much sense in English.