The chief decision-making body of the EU is the Council of Ministers, which consists of a representative from each member government. They're elected - unless a member state allows appointed government ministers - because they are the relevant government ministers from each state. For top-level decisions, the heads of government meet. For agricultural policy, the agriculture ministers meet. Whichever set of ministers meets is, for the time being, the Council. The bureaucracy does what the Council tells it to.You cannot united Europe, europe is now in relative peace but the EU is a bureacratic monstousity that takes away a country's souvereignity and replace it with undemocratic rule by foreign chaps in Belgium, the people don't want that and resistance against the EU grows because of that.....
The body which executes those decisions, the EU Commission, is appointed, but it is subject to some democratic oversight, by the EU Parliament. If you want someone to blame for the weakness of that body, blame the governments you (& the rest of us) have elected. They've steadfastly refused to allow the EU Parliament more power, or any other increase in democracy within the running of the EU, because they want to keep power in their own hands.
I get sick of people blaming the EU, as a body, for the actions of its member states & their governments. The member governments appoint the Commissioners, who run the EU. The member governments, through the Council, set the policies the Commission executes. And member governments firmly stamp on any proposed increase in democracy.