I'm going to say as a European, and someone who believes in the idea of Europe, European leadership has been awful, and Europe is kind of getting what it deserves.
This hasn't come out of nowhere. The invasion of Iraq was a key signal that the USA might not care what Europe says and thinks, over 20 years ago. Obama took over and things seemed superficially better because Obama was very polite, but underneath the USA was still distant, obviously looking elsewhere, and even frustrated that Europe seemed ineffectual. Putin invaded Crimea in 2014 and Europe barely twitched. When Trump took over in 2017, alarm bells should have been going off all over Europe that they needed to sort some shit out and fast. Instead, they spent 8 years dithering, and here we are.
Trump can negotiate with Russia over the EU's heads because Europe has dismally failed to put itself in a position where it merits being listened to. It talks about securing Ukraine's independence, and has done basically nothing to ensure it's in any position to do so. 500 million people and ~$25 trillion economy, and it's effectively powerless - diplomatically, politically, militarily. The EU also surely needs to start looking at other powers gradually carving up the world to control resource routes and develop key new technologies. Russia takes Ukraine, the USA takes Greenland, China buys Africa, where's the EU getting it's stuff from? Europe faces being shut out and left behind unless it gets its shit together. Just how many strategic reports does it need to write about the critical importance of increasing its defence capabilities until someone actually does it? Europe might be so incapable that even having been so comprehensively taken over by events here it still won't get into gear.
Europe needs to bulk up its military, and I mean a lot. By which I mean not equalling Russia / USA's, just that defence spending (%GDP) in many EU countries is so incredibly low, even if they doubled spending it would still be below average. It needs to make a lot more of its own hardware: if it can't trust the USA, it's got to stop buying American. It needs arms and munitions manufacture capable of independent action. And not just military, it needs whole technologies where it can stand on its It needs a proper, EU military capable of independent and effective action. I know this is a HUGE political issue, as this is a massive and direct erosion of national sovereignty. But a Europe where big decisions are perpetually held hostage by any prick who'll sacrifice the greater interest to win their next election, or actively sold out by traitors like Orban, is a Europe guaranteed to go into the future as a failure. A retirement home; affluent, bickering old fuddy-duddies fading away into obsolescence and insignificance.