Agreed that much of Europe (excepting those with access to North Sea energy) are in for a difficult time.
Germany has been installing renewables. That part of Europe is often cloudy, so wind. I found a wind map of Europe (pasted below) and it doesn’t look terrible for northern Germany. I’ve been reading that Germany’s installed wind power generation isn’t performing up to ‘nameplate’ capacity which suggests that they installed those in the ‘good’ areas (as opposed to that northern band of ‘very good’), probably because that’s where they had sufficient grid interlink capacity. I also dug around in North Sea nautical charts; offshore looks at first glance as though it might be feasible — but the North Sea is a famously difficult/expensive place to build things — and really good at breaking whatever you’ve built come winter storm season.
Also agreed that LNG from North America is a good way off. NG is really cheap in NA (waste product of nearly all the shale oil wells) but there aren't gas pipelines to where most of those wells are (gas being flared off is visible from space) and new ones take decades and aren't cheap — and cooling/pressurizing NG into LNG takes energy — and then it isn't clear there are enough LNG tankers. About the only thing not concerning is US overwatch of the required trans-Atlantic shipping.
All that said, Russia is in for an even more difficult time. Many of their wells, particularly the ones in Siberia, require a high level of tech capability that the Russians (now on their own) don’t seem to have. Like Germany, they have an upside-down demography — but even more so. People stopped having enough kids back when Stalin was jamming everyone into tiny urban apartments or onto collective farms. They still have excess gas and oil, but much of that is due to an industrial collapse in the 90s which dropped internal demand.
We’ll see what happens this coming winter. There are quite a few “worst case scenarios” that I’d rather not think about right now…
