You speak German don't you?
It means 'it is not german'.
Ich kann Deutsch aber nicht wenn ich besoffen bin = I can speak German but not when I'm drunk
nicht is not in english
sündigt nicht = don't sin
It means german.
Spring' nicht (full springe nicht) means don't jump
Ich will nicht translates as I don't want to.
"That is not" is "das ist nicht" in English.
"Deutsch" means "German."
Ich bin nicht deutsch literally translates as I am not German but is grammatically incorrect. The correct form is ich bin kein Deutscher.
I don't like you.
Don't go in the city.