YOU SAID:

i became the worst karen in history and this happened

INTO JAPANESE

私は史上最悪のカレンになり、これが起こった

BACK INTO ENGLISH

I became the worst Karen ever and this happened

INTO JAPANESE

私はこれまでで最悪のカレンになり、これが起こりました

BACK INTO ENGLISH

I became the worst Karen ever and this happened