First most of them not smart there is no genius ideas and all they care is just to make people happy and elect them that's it.
That's mostly western political leaders for example USA biden admistration as perfect example.
Until we find our way back the the grassroot of what being a leader entails, then we are going to discover that its all about self denial under the interest of the people, if truly you have passion for being a leader, then you will focus more on the peoples need and how you will ensure that things are well to do with the people you govern over.
But in our todays leadership, we see a lot of abnormalities happening whereby the so called leader could to serve the interest of the masses after being in office, they couldn't be approached and things keep getting more worse than ever for the people before of the leaders incapacitation to lead, and this is now a challenge that we should look for competencies and not influence or money in choosing who will lead us.