This labeling of public or subsidized services as "free" always bothered me. They aren't free. The citizens are just paying for it indirectly.
> So people want to have the same socialist services as people enjoy in France without the tax rate
Venezuela was experiencing food shortages and other issues well before oil prices crashed. Even when they still had plenty of money to bandaid these issues the cracks in the system were already very apparent.
The problems were largely a result of the fundamental flaws of a centrally controlled economy and the corruption that system opens the door to, not necessarily their ability to pay for it all.
For example, Venezuela wanted to make food much cheaper so the poor can afford it easier, so they created price controls. But historically price controls have repeatedly resulted in the opposite happening with more expensive food and shortages. Venezuela was no different.
There are plenty of reasons why, one big one is that no country produces all of their own food domestically, they have to import it, and no country is going to sell to Venezuela when they can go to Brazil or Colombia and make more money. So the government has to operate as a middleman and pay the cost difference to keep imports coming in. But this is easier said than done, as it involves plenty of guesswork and projections and micromanagement that wouldn't otherwise be there in a normal market.
It also highly disincentives local businesses from operating efficiently as their margins were gutted and they can no longer compete by winning over customers with better quality products or variety. So Venezuela started to nationalize these businesses and reduced the variety of food available to make managing it centrally easier. People were flooding across the border to Colombia to buy the products they can no longer find in Venezuela.
The same issues happened in plenty of other industries they got involved with, after Chavez announced capitalism was a dead old ideology.
Wikipedia has a good overview: https://www.wikiwand.com/en/Economy_of_Venezuela