Nothing important like digital rights, environmental issues (pesticides, nitrogen levels), harmonising trading so every member-state can compete as equals through the whole EU/EEA market.
Only useless bureaucracy which you don't give any examples of.
There are many examples of this, the most recent one would be regulation regarding plastic bottle caps.
Oh, hey, no problem, here's some examples.
EU has tried repeatedly and still tried to undermine safe communication, end to end encryption (chat control), freedom of the press and of personal speech (democracy shield).
Its environmental regulations have endlessly complicated the most basic of business operations like selling anything that comes in cardboard boxes or fixing a car with non-OEM parts.
Useless EU inventions that come to mind are the cucumber and banana size regulations, non-removable bottle caps, mandatory 15-minute screen standbys or click through a menu, sound volume warnings on phones, mandatory driver assistance systems in cars (that don't work well in cheap vehicles, but still increase the cost and can't be permanently turned of as a preference), mandatory start-stop in ICE vehicles (which lowers lifetime of bearing materials), rising consumer goods import costs because de minimis is getting axed etc.