YOU SAID:

my French teacher is very stupid, annoying and she thinks her lessons are fun

INTO JAPANESE

私のフランス語の先生はとても愚かで迷惑なので彼女のレッスンは楽しいと思います

BACK INTO ENGLISH

I think her lessons are fun because my French teacher is so stupid and annoying

INTO JAPANESE

私のフランス語の先生はとてもバカで迷惑なので彼女のレッスンは楽しいと思います

BACK INTO ENGLISH

I think her lessons are fun because my French teacher is so stupid and annoying