In answer to the thread title, be a real friend and soon you'll make friends and in time real friendships will be formed.
Meet-ups are a great way to start. I have 5 kids so don't get to go out much, but I have been to a few events, and had an awesome time, every time. Hubby goes to waaaay more then me, and after over 2 years of attending and meeting people, I'd say he has made some great friends.
Hope you have been able to find a place to stay. That will definitely take off one of the stresses, to have a place to call home. http://www.alle-immobilien.ch/
We found our house through this site, try it out if you have not found anything yet.