There was a vote just last yearThe EU in an unelected ball
that increased the share of the far-right fractionsof socialist corruption,
elections in itself is a way to hold politicians accountable, in addition is there an independent EU court. Also, there is the European Court of Human Rights, which was established by the Council of Europe, which is not a body of the European Union. The individual member states also play a role in certain decisions which in many countries are democratically elected (one could have doubts on the levels of democracy in states like Hungary).accountable to no one.
We should look at the EU in two ways, an uncomplete project of cooperation. It is not perfect and often requires crises for foundational changes. The second way we have to look at it, is that it represents the vote of the EU as a whole. Currently we see that the EU is moving further from the centre to the right, with a focus on immigration. That is the political side of the union. When one says I support the EU it is often the former, but may or may not apply to the other.
There are definitely politicians that see opportunities for corruption, but this is not what the EU as an (supranational-)organisation is.They set up traps to steal money from companies to support their lavish lifestyles, salaries and luxury meals.