I've had this conversation before but I find it extremely implausible that the West planned all of this out in advance and the lynchpin of the entire plot was being able to destroy Russia with sanctions alone. Again, Germany wasn't even willing to fully participate, and they had to resort to some pretty desperate measures after the pipeline was destroyed. Nothing was done to ensure India's cooperation, and they were saber-rattling with China, neither of which makes sense if they were planning on all this.
I also haven't heard any real explanation for what caused this miscalculation, other than pure stupidity and buying into their own propaganda. I think this is the same flawed analysis behind the initial point that I disputed. When a politician says something you can't just take it at face value, even when it fits into your narrative and makes them look bad, you still have to consider why they're saying it, what they're trying to accomplish, and who they're trying to appeal to. When they started doing sanctions, obviously they would say they thought they would work, but this indicates nothing about their actual beliefs. They were just trying to drum up support for the sanctions, there's no reason why they'd say, "Well, who knows if these will work or not" if they're trying to get people to support them. Very rarely do politicians say something just because they think it's true.
The narrative that fits actual events better without requiring abject stupidity and actions contrary to the actors' own interests, is that Germany did not expect a full scale war and did not plan for losing Nord Stream 2. The outbreak of war came as a surprise to a lot of people, including the majority of this site, and Merkel did not have a crystal ball. The ceasefire was broken due to domestic pressure from the far-right, plus international pressure from the US, which did not assume sanctions would work, but rather saw extended bloodshed as a possibility and did not care, due to the profits it would mean for the military-industrial complex and not caring at all about the lives of Ukrainians. There are internal fractures within NATO and within NATO states, due to competing class interests, it's not one big conspiracy working together.