I typed "Man" instead of "Mann"; instead of reporting a typo as usual, it said the translation was wrong.
That's because "Man" has another meaning.
Really? What is it?
It means "one", or "you", in a hypothetic way, such as: "If one doesn't like it, you don't give it to him" or "And if you jump inside her room, he tells you to live"
why "unseren" here and not unser? Is it because of Mann here in accusative?
Yes