Do you understand that the difference in the Ukrainian case is literally caused by the actions of Western countries?
Venezuelans are going to work tomorrow because no one has provided their corrupt dictatorial government with hundreds of billions of dollars in military and financial aid?
Yeah, sure, if they did not get support they would have dies already and look what peaceful place this graveyard is. Slight hiperbole, not everyone would be dead, but a lot, for sure, and the rest, too scared they would be next to do anything else.
The difference is that Russia's goal is the annexation of most or all Ukrainian territory, the looting of the country and the erasure of its national identity. Without western support, Ukraine would be in a much worse state than it is now.
Whatever US goals are, it seems they are not pushing forward after snatching Maduro.