My ex-girlfriend went to school in Switzerland and said that she would settle there after graduation. What should I do? Can I follow the immigrants?

You said you were an ex-girlfriend. Let bygones be bygones.

If you still can't let go, then you can go abroad to chase her. If I were you, I wouldn't ask me what to do now. I want to ask how to apply for a visa, and immigration is the fastest. Consult the immigration agency as soon as possible. This is the quickest way. After all, Fanda is a professional, so it's safer to consult them, don't you think?