Also, it's easy to have social welfare when you have a homogeneous high-trust society... The more migrants the EU lets in, the more you see the whole thing deteriorate.
There's no such thing as "free" anyway, it's always paid by someone else. Pension at 60 is unsustainable, free education just devalues it, making it harder to fire people makes it harder to hire people, etc...
Europe is in economic decline, it's in population decline (as many other western nations btw), it's becoming more authoritarian (the UK prolly arrests more people for social media posts than Russia nowadays), and it's failing to compete on the world stage.