score:6
Typically, unaccompanied minors can travel by air but it has to be clear to the airline that the minor has parental consent (usually by one parent taking the child to the airport, or picking up the child at the other end).
Crossing borders as an unaccompanied minor may be a different matter, though. The country you are entering may wonder if you are running away from your family. You may need a notarized letter signed by both of your parents authorizing you to leave the country. If there is any uncertainty about whether you need this, I would still have it as the risk of not having it is being returned home and not seeing your family in Germany.
Upvote:-1
Your airline will know. Also, airlines themselves may require that you are accompanied by an adult, especially the low budget ones.
Upvote:2
Germany should have no issue with that, it is pretty common for people to travel alone with 15 or 16. I wouldn't know about the Macedonian side.