Not enough money so not a different country but at 17 I had moved a few cities away.
Wasn't where you're planning to go though.
But my opinion is that Slovenia is actually a very decent choice.
I don't know and you don't have to tell me where you are from however if you already speak a language that has similar roots then the language learning would not only be doable but potentially interesting as well.
I'm not sure if I remember this right or wrong but I think that Ljubljana even has a few colleges where you can enroll in an Engilsh program even which would be an ok backup plan in case of a pinch if that would feel more natural to you, but for that I think you'd have to pay a bit of money extra.
Maybe even not, should probs depend on the college.
My giving of unreliable info aside, if you are planning to move around that area of the map, then Slovenia actually might even be your best pick.
Between them and the neighboring countries, Slovenia manages things pretty well.
Also, for the moving out part, it may feel scary at first however if you believe yourself to be capable of it, then go on and try!
For plenty of reasons, it could be a plenty good thing. Try to give it a shot.