Or with the 9€ Ticket in Germany?

Well, of course a ticket, that was limited to three months did not have a lasting effect on car usage. No one would sell their car and switch to public transport because of such a short, temporary price reduction. Even the follow up ticket (costing 49€ currently) is only guaranteed for a year at a time, then the government has to discuss funding again with the federal states. To have people switch from cars completely, it has to be a long term alternative.

But even if only some trips are now done with public transport instead of car, it is still an improvement.

I agree with you, that a good quality is also important, but I don't think it will happen, if the financing for improving the quality has to be primarily via ticket pricing.

Dude, in the first link straight away:

has not reached its goal to reduce car journeys,

That does not mean it didn't reduce them.

You even sounds more like a propagandist with your :

Just because someone has a different opinion than you, doesn't make it "Propagandist".

Lol get your facts right, then we can discuss.

Then you say the tram in Montpellier isn't good, like what on earth does that have to do with anything? And FYI I actually lived there for around 6 years, and yes the tram was slow and doesn't work well when it rains, but that was the case before it became free . Your point?

You are just word-salading to hide that you are wrong lol.