Lots of countries call themselves democratic that absolutely aren't e.g. The DPRK for a ridiculous example. We actually aren't even democratic in the truest sense that we don't all vote on everything but instead elect representatives to vote for us (we hope). It's all a compromise with trade offs.
Here one will just get different "nepo babies" who are more directly involved in the struggle for power because they will be connected those in power - people who have been useful and will be wanted in future.
Some people say that the desire for power is the thing that should disqualify a person from having it. i.e. we perhaps need some anti-politicians. This would mean people who don't want to be in power having some forced upon them like in Jury duty.
The governments don't really cause the issues. The big issues are just things that face the country no matter who is in control - how to pay for everything, how to deal with population aging etc.
It's not a simple country - it's a machine with millions of complicated parts and therefore it's difficult to come up with simple things to do that will make everyone happy.
The public don't all have a 10000 foot view, which I don't think any 1 person could comprehensively understand anyhow, and are susceptible to being sold "simple solutions" by politicians - in fact they won't elect anyone who doesn't pretend at least to offer simple solutions.