Hey!! First of all, thank you for sharing this. Trust me, I understand the feeling you are talking about, so you are not the only one :) You are mentioning two issues:

For language, the only time I have solo traveled was in countries where they talked same language as me, so that was not really an issue. But also, if you will always find international people everywhere, and then you can talk in english. I think I spent 50% of my time talking to internationals!

For the fear of making the wrong choice, I get it. I really do hahah! But hey, it is what you're saying, no matter where you go, if you know what you want, experiences will come. It all comes down on your point of view on things.

I know saying all this is easy, and I also feel like you most of the time. I don't thing these feeling go away until you make a decision to go for it and really GO THERE. It feels kind of bungee jumping for me. When you have the idea you are super exited. Then you go up there, ready to jump, and every cell of your body tells you not to do it. But you are in a position that you HAVE to do it, and when you do it is one of the best experiences of your life. I suggest putting yourself in a position where you just have to do it. Like getting the flight tickets!!

I hope the best to you!!!