Germany has a massive industrial capability. If they decide to get natural gas resources from other avenues then they can make it happen.
They could also operate on other forms of energy for the time being.
Not easy...but not impossible...
India and China will still do deals with Russia. They're evil, and they're cowards.
What are the other avenues? The US Democrats were peddling the ban on the Russian gas for 10 years and now the capacity of the US LNG producers is good to cover the monthly European needs for 5 days. Qatar is lacking the ability to increase capacity and the Norwegian fields are losing output. Not to mention that the LNG is many time more expensive that the Russian pipeline gas.