Examples something wrong in Czech examples

How do I translate something wrong into Czech?

Movie subtitles

I did something wrong.

To je moje vina.

Why aren't you speaking in Korean? Is there something wrong?

Proč nemluvíš korejsky?

Is. something wrong?

Stalo se něco?

Something is wrong!

Něco se stalo!

Something's wrong.

Je to zvláštní.