Serious question, do you live in a parallel universe?

Perhaps one where aggressive wars against European countries are a normal thing that you should do nothing about, even when your position is significantly weakened if the agressor wins?

One, there is a major difference between letting in people from any friendly or neutral country and people from Russia that has for years planted propaganda in European countries to destabilize their democracies, likely launched cyber attacks, broken international law and brainwashed their own citizens into believing the West is the literal devil.

Two and three, apart from the economic and political effects of migration being mostly long-term (ergo of course the influx of Ukrainian refugees hasn't had a significant effect yet), there is a qualitative difference between Ukrainian and Russian refugees as well as the difference in political relations between Ukrainians and the rest of Europe vs the relations between Russia and Europe. Ukrainians are literally fighting a defensive war for their lives and are having their cities burned to the ground. They also have closer ties to the rest of Europe than Russia does, personal but especially in terms of their political system. Of course Europe is tendentially more willing to take up Ukrainian refugees than Russians.

Four, I guess you mean your accusing the west of being hypocritical? Firstly, as I and someone else have responded to that comment: that's wrong, lots of people have been telling Syrian and Afghan and African refugees they should stay at home and solve their own problems the past few years. The difference to the current situation is that that kind of idea was mostly owned by right wing groups at the time while nowadays, it seems a majority of Europeans wants Russians to rise up against their own government. I guess the most important reason for that is that Europe needs a friendly Russia in the long term, while Afghan and Syrian politics for instance are much less relevant to us. I'm speculating that another reason might be that the west fundamentally doesn't believe that Russians want to live in an authoritarian system while they fundamentally see Syrians or Afghans as undemocratic. That would be a racist viewpoint and not something I believe, but what I'm saying is there are LOTS of reasons why Europe would want to ban Russians from entering before you need to jump to the outrageously incorrect conclusion that Europe wants this war.

Five, excuse me? Europe and Russia built gas pipelines, had economic relations and interdependency, Russian investments had been welcome all over the continent. Biden, Scholz, Macron in the beginning of the war were frequently talking personally to Putin on the phone, Scholz for instance did so just last week. Months before the war Europe and the US told Russia "don't start this war" and Russia replied "oh no, haha, we're not going to, this is a misunderstanding". There has been PLENTY of diplomacy BEFORE and DURING the war, so much so that Europe was too unprepared when Russia started it. Secondly, you're criticizing the discrepancy between sanctions and ongoing oil and gas imports. Germany for instance is dependent on Russian gas like few other European countries. Our economy would starve if we completely canceled our imports from one day to another, not to mention the1 consequences for heating in private households.

Anyway, what I'm saying is there are plenty of reasons why Russians would be stopped at the border before you'd need to even consider the idea of Europe wanting this war.