The Duke and Duchess of Sussex meet crowds and well wishers

The transcript consists of a brief statement where the speaker denies being present at a certain time or place, emphasizing their absence with a short affirmation.

What do you think the speaker means by saying 'No, I wasn't here'?

Why might the speaker emphasize 'Really' in their response?

In what situations do you think someone might say 'I wasn't here'?

How does the tone of the statement affect its meaning?

What could be the context behind this statement?