When I flew to Munich, one of the biggest problems I faced was creating a new circle of acquaintances. It is sometimes difficult to make friends even in your own backyard, where everyone is familiar from birth, let alone another country. In my case, perhaps, everything became more complicated due to different cultures and the feeling of isolation from relatives, whom you don't seem to miss, but I'm used to being always in sight. Finding "real" friends is a long process here, love at first sight does not work. It takes time and more or less regular communication for enough common themes to arise between you and trust to be established. And yes, here, as with the choice of a soul mate, people will disappoint, give false hopes, and then disappear. To seem "the same", but in the end not worth the evenings spent on them. I have gone through this repeatedly.
What can you do to find a real friend or girlfriend? First and foremost, continue to participate in social situations. Maintain an acceptable relationship with anyone you know, go to museums, parks, and occasional parties, even if you feel shy or uncomfortable. Your potential friend is somewhere outside the apartment, at least, so it's worth leaving. Another way to find like-minded people is to join different communities. Or find groups of your fellow countrymen - they are in many European cities. As for your behavior, there are no tricks and rules that will help you one hundred percent to make a real friend. Treat others with respect, try to be genuinely interested in a person and be yourself. And do not run desperately with the idea of finding friends - and at once and forever, a strong bosom friendship. And just find more contacts. Friends, good acquaintances, or just people who are ready to accompany you to some concerts, events, outings. Then it forms itself, that you will be more attracted to some people, you will begin to communicate more often and closer.
I do something like this all the time. I don't go anywhere on purpose, but I am always invited somewhere. To do this, you don't even need to have friends, you just need to type contacts on some Facebook of your interests, and you will constantly receive invitations to some exhibitions, readings, movies and parties. And if you sometimes go to them, you will always meet some interesting people. With someone it turns out friendship for many years, and with someone you remain friends.