The problem for Europe is that they have nothing to trade with Russia. They can get better prices elsewhere.
Before 2022 we had the big EU auto companies in Russia, we also had nice handbags, shoes and outfits to sell to Russia. Plus we could have them hide their money in London property. Machine tools were also a brisk trade.
Nowadays Russia needs nothing from Europe. Nothing apart from peace and their 300 billion back. But we have gone past that stage. The Russians have never broken any energy contracts in this, the West has cut themselves off.
Regarding the EU not wanting the former Ukraine to lose, there is a difference between what the officials want and what the people want. From Finland to Portugal I am sure most people would want no war and cheap energy, however, their 'leaders' are just doing what Washington tells them to do.
Huh? Even in the US the majority are sympathetic to Ukraine in every survey. Sure we all want no war - but we are not really in favor of no war at any price.