It´s not a bad job

You know, most people go to the theater maybe once or twice a year; some people ten or twenty times a year. I go every day. For real. You might think I´m a real fan (or that I´m crazy).
But that´s not true. I work in a theater. Wonderful job!", people say to me. You get to see theater shows every day", they say. "Yes," I reply, "I get to see THE SAME show every day. It´s like the Bill Murray movie 'Groundhog Day'!"  (This could also be written as "people have said to me" and "I replied" but you wouldn't want to mix past (said) with present (reply))
I usually don't complain too much. It´s really a good place. You can meet a lot of wonderfoul people, and have a good time after the show!

It´s not a bad job

You know, most people go to the teather theatre (or theater) maybe once or twice every a year. Some people ten or twenty times. I go everyday. For real. You maybe could would think I´m a real fan (or than that I´m crazy).
But that´s not the true truth. I work in a theater. Wonderful job!", people said say to me. You can see theater every day", they said say. Yes", I reply, I can see THE SAME show every day. It´s like the Bill Murray´s movie Groundhog Day!"
I usually complaint too much. It´s really a good place. You can meet a lot of wonderfoul people, and have a good time after the show!

Great job! My comments in red are corrections and blue/gray are suggestions.

You can say "that's not true" or "that's not the truth".

You can say "It's like Bill Murray's movie" or "It's like the Bill Murray movie". The second option is better because it's not really his movie, he's just an actor in it.