Having been on the inside, it's not that they don't want a different system, it's that they see the real or perceived problems of our system as highlighted by their domestic media and generally from their point of view. This makes them substantially less enthusiastic than we think they would be.
The only way to convince them is to show them that liberal democracy does indeed yield better results, with people feeling more secure and leading happier lives. In order to do that we need to ensure that our democratic processes lead to solidarity and not division. That's why the last 4 years have been so damaging to our system, the fabric of the system has been damaged by extreme partisanship, without considering that standing together with our neighbours is in many cases more important than being 'right'.