anonymous_sorry parent
Others have suggested "bullshit". A bullshitter does not care (and may not know) whether what they say is truth or fiction. A bullshitter's goal is just to be listened to and seem convincing.
The awareness of the bullshitter is used to differentiate between 'hard' and 'soft' bullshit. https://eprints.gla.ac.uk/327588/1/327588.pdf