The New Schlieffen Plan

Germany and their Blitzkrieg warfare was unstoppable at this time in world war 2.  No country had a chance to catch up and get close to stopping Germany even if they had the chance and were right in front of them; Germany was too fast.  Were the countries scared of Germany or did they simply know they were no match to them?  Germany had decided to ignore the French and the British when they lined up along the river, and they ended up going through the Ardennes forest which was unexpected. France thought since Germany has big tanks that they would not go through the forest and they would go through France instead.  Germany had put its tanks close together once they got into Belgium without a problem. France and GB had spread its army apart thinking Germany wouldn't be  tight together. Why did they think Germany would be so spread out? They were all coming out of the same place and they weren't going to separate, so why would France and GB think Germany would be in multiple groups? Germany had been able to get away once again due to a stupid and idiotic mistake by the cowardly allies.