Funeral in northern Gaza of man killed by Israeli troops

The speaker wraps up the session by indicating they are leaving.

What does the phrase 'I'm going to head off' imply about the speaker's intentions?

In what contexts might someone use the phrase 'I'm going to head off'?

How might the tone of voice affect the meaning of 'I'm going to head off'?

What are some synonyms for the phrase 'I'm going to head off'?

Can you provide an example scenario where someone might say 'I'm going to head off'?