Three questions: 1. If i were to magically appear in Switzerland as say a middle easterner or random non european national how long can i stay? How would i be

Three questions: 1. If i were to magically appear in Switzerland as say a middle easterner or random non european national how long can i stay? How would i be removed? 2. How long as a regular person without a job or special skills until i can be citizen? 3. How often do either of the two above happen?