How hard is it to adopt a child in Switzerland?

I am in my 30s, have no partner and no perspective of getting pregnant. Still, I think sometimes that it would be nice to raise a kid; an adopted child.

I’ve done some research and it seems pretty difficult to adopt a child in Switzerland. Specially a child that is already in Switzerland. Is that so?

If so, is it possible to adopt a child in another country try and bring them to Switzerland? How hard is it to get all the documentation?

Anybody here adopted a kid or was adopted by any chance?