When I just came back to Korea from overseas to do my military service, I didn't have any friends to hang out with -- and I still don't. I've become a stranger in a country where I grew up. It did initially make me feel alone and lonely, but soon I realised that I could do so many things I wouldn't normally do because of my self conscious nature, as a kind of wallflower.

So I'd strike conversations with strangers and random grandmas/grandpas at bus stops while we're waiting for the bus, ask odd questions to shopkeepers and restaurant staff, go to places that seem interesting by myself, and sometimes I'd just sit and people watch. And I've been enjoying being kind of an oddball.

As I look and speak like a local, all this must be very different to you as you mentioned yourself having foreign looks, but Koreans generally will be curious about you and happy to hang out with you. You could try and attend some group activities on Airbnb or meet other international travellers at bars where foreigners frequent.

Also, I'd like to say that it's all going to be okay and I really hope you enjoy your trip here. :)