Use "have no clue" in a sentence

1. I have no clue.

2. I have no clue as to why.

3. I have no clue about the steel dust.

4. The problem most men have is... they just plain straight up have no clue how to talk to women.

5. If Bc is said and you are talking about someone, the people around you will have no clue what Bc …

6. I'm receiving emails from a website called Blabber Buzz, never visited this site so I have no clue how this site got my email address, here's the website