Wrong again. Europeans could and did in fact vote for him
Beaurocrats [politicians are elected, beaurocrats are appointed] of European Commission, of which Juncker is a president, are not directly elected but nominated by the European Council (of which itself is semi-directly elected...) and then approved by the EU Circus that is a Parliament in Strasburg, which itself breaks many democratic rules*.
*youtube.com/watch?v=y93wPZT9Oqw (with english subtittles)