The EU Commission is a group of permanent employees who sit in an office and write reports, administer projects and draft legislation. They have no voting rights. They are organised into departments, each headed by a politically appointed Commissioner.

Your country has an identical group of people with a similar role who you also do not vote for, organised in just the same way.

For some reason it's only "undemocratic" when the EU does it, even though literally every country in the world has some kind of permanent establishment of administrators and no country could function without them.