It’s fair to say that you make friends with people who you have something in common with. What’s more bonding than being a foreigner living in a different culture? It’s for this reason that expats make friends with fellow expats, to share stories and exchange advice on how to settle into your new surroundings. There are many expat associations, clubs and activities that encourage this type of friendship. This doesn’t have to mean that you’re suddenly living in a British/American/insert your nationality enclave. Expats can be from any country, so you can easily find yourself surrounded by an international pool of potential friends.
So don’t feel bad about being in an ‘expat bubble’ and socialising with an expat group. As you progress with the language and if you are staying for more than a few months you will naturally form relationships with the people around you. Who knows, you might find yourself an international circle of friends who open up different cultures and opportunities you never knew existed.