So the question becomes; how can we make it so that everyone has access to affordable fresh food, and is capable of preparing it? I'd argue the first step is awareness and education; if more people know what their options are, it could improve things significantly.
Good food can be had on the cheap; if you know where to look, and how to prepare it. I basically took over cooking duties for my family months ago, and I'm always amazed at how easy it is to make a healthy, and satisfying, meal.
I'll admit to being ignorant as to what's happening in Croatia; but besides that, most conservatives I've talked to argue in favor of one or more of those positions you listed. It leaves me rather confused as to where this idea of yours comes from that they're "de-facto centrists".
The modern world is a result of human nature; even if you managed to reset everything to zero, our lives would not be improved in the slightest. Our problems would simply take different forms.