For those who don't know, the Venezuelan government passed laws that fixed prices for many goods at mandatory low values. So if you were selling food (or any number of other things) you had to sell it at below what the previous market price would have been. It didn't work, the economy tanked and people got upset.
That's a gross over-simplification. I'm mentioning that because a ton of unrelated things get blamed on "socialism".
Several things happened. First, Venezuela's electricity grid is mostly based on hydro-electricity. Then they were hit with a 4-year drought from 2013-2017, the reservoirs ran empty and they couldn't supply electricity for that reason. Electricity was rationed, and the international media blamed it on
socialism while omitting any relevant details like the drought and hydroelectricity problem. Then, if the hydro comes up they blame Chavez for the nation being dependent on hydro-electricity, despite such dependence predating the Chavez era by decades. Somehow he's culpable for not completely redesigning the existing electricity grid.
Similarly, the drought reduced agricultural output, thus food imports increased. The increased food imports were also blamed on "production dropping due to socialism" by the media while omitting the "there's a drought on" detail. I should really stop there because just that one thing, which is
very easy to fact check that I'm telling the truth, should already signal that
you're not being told the whole truth.
Second, was the concurrent collapse of the international oil price, and oil makes up 95% of Venezuela's export income. Now, that's blamed on Maduro's socialism as well - he supposedly should have diversified the economy. But ... why didn't the non-Chavez/Maduro people diversify the economy when they were in power.
And third, was opportunistic US sanctions back in 2014, further cutting off international hard-currency when it was most needed to import more food,
because of the drought, remember. So you had a drought dropping food production at the same time as international economic pressures and sanctions cutting off money needed to import food.
The price controls were just one element of all that, and not necessarily the biggest one. Price controls don't
cause starvation. The price controls existed for 10 years before Maduro was elected, despite inflation from 2003-2013 being a historically low period by Venezuelan standards.