Unfortunately, I think it's unevitable for the far right to keep growing. Europe is suffering the contradictions of global capitalism devouring itself as it cannot continue increasing its profit margins, which has very noticeable consequences on people's lives. Plenty of people aren't going to turn towards far left options because, simply put, they're prone to bigotry, and they're never going to accept any position that aims to fully integrate everyone in freedom and equality. Many of those used to at least somewhat trust their traditional conservative parties, but once they grow angry enough, they need to find a solution - even if it isn't real, even if it won't solve their problems. And then they find a demagogue offering them a boogeyman, be they Jews, Muslims or queer people.