The reverse culture shock is very common, I think everyone returning back to their country of origin experiences the same. There’s literature about it to help you gather your feelings and make sense of your reactions.

I think it helps adjusting back to be specific about the things that feel odd back home.

Since both you and I are Finns, based on my experience there are some specific things going on when returning from the “great wide world” back to a small country, with our small language. At least this is my experience having lived in bigger countries, in the US and also in the EU. For one thing you’re suddenly surrounded everywhere by the language you didn’t hear abroad at all. It’s not just your “secret” language with which you communicate with family and friends you left behind. Everything feels very small scale (even in our biggest “cities” as they were). And nothing feels exciting because it really is the good old boring Finland.

On the other hand, you weren’t gone that long. A lot of Finns nowadays spend a few years abroad studying or working. Also those that stayed home have grown and experienced interesting stuff while you were gone. I think a common mistake (young) returning expats make is that they were having important life experiences abroad while all the rest back home stayed on hold. Dont be that “expat”.

I guess you’re quite young, but you should know Finns used to make a lot of fun about Finns who spent a short time abroad and pretended to forget their native language and customs. Like Finnish exchange students asking “how do you say x English words” after a semester in Minnesota. Google Andy mc coy Amsterdam for the most beautiful example of a returning “expat.