Have you been following the news? The current Russian regime is threatening the use of nuclear weapons, and massacring thousands in war crimes in Ukraine.
The EU has already set up permanent alternatives to Russian gas: https://www.bloomberg.com/news/articles/2022-09-27/europe-is...
The current Russian regime will never be able to repair relations with the west to the extent that will allow the Nordstream pipelines to resume operations.
The next regime might be able to repair relations, but the current regime doesn't care about that: they'll be dead or imprisoned for life before any new regime can take over.
With the EU shifting to other permanent sources for its energy supply, it's doubtful they'll want to switch back to Russian gas ever. Getting burned once by a rogue regime using gas supply for leverage is quite enough.