wow windows live write, where did you get that from. WLW is obsolete since 2012 as the last version was released, although it mlight work i wouldn't recommend it.
That brings us to XML-rpc, like stated in this article https://www.hostinger.com/tutorials/xmlrpc-wordpress it is also obsolete, and also in WP replaced by json api. But ok now back to your question.
XMLRPC can be instelled on ubuntu this way:
BUT REALLY THINK TWICE BEFORE SETTING THIS UP!!