How to say in Czech: They have not seen me here before.

English
have not seen here before.
Czech
Nikdy předtím mě tady neviděli.
They have never seen me before.
Do they live here?
They live here.
I am here with friends.
They have never met me before.
Excuse me.
That’s never happened to me before.
Do they understand me?
Nobody understands me here.
Can they see me?

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