I believe there is no absolute system of good and bad, it all depends on the condition of a country. For developed countries with high levels of education democracy can be the right choice, but for countries whose average education is still low democracy is less suitable, because it is easily mobilized by irresponsible parties
Community education factor is very vital role in the world of democracy. But the lack of success of a democratic country can not be blamed solely on its less educated people.
Because I think every decision will be back to the leader, wise or not a leader can make decisions. A country if headed by a very long-serving leader or a king if ever made the wrong decision will still harm the state.