I think that having hereditary rulers is a very bad idea because psychopaths CAN pop up frequently in the line because usually, the founder of a line is an imperialistic power grabber.
A king with significant powers that is VOTED in and can be expelled if he behaves egregiously, is probably a better idea.
I do not think we need kings and queens. I think we need to build institutions.
For example we need to put certain things into the constitution that can never be changed, and those who want to change them or propose to change them (in the constitution) in parliament must immediately be removed from their position and can never again work in politics.
For example (things to put in the constitution) :
Nobody can ever prohibit somebody to walk where he/she wants and police hour can never be implemented.
Nobody can ever mandate to people what to wear both man and woman or not wear, that includes face masks.
Nobody can ever prohibit someone to work.
Nobody can force someone to take vaccine or blackmail him that he can not work or go into the shopping center because he did not take the vaccine.
Paper money should exist.
Nobody can be in office more than 6 months and that includes president, prime minister if you have one, parliament members etc.
Everyone in the office must be under camera 24 hours per day for a six months and that must be on television so people can be sure that everything is okay. If he/she does not like that he does not need to be in the office, nobody really forces them to be in politics. Country like France with such a huge population can certainly find some people who are willing to sacrifice their privacy for a 6 months in order to serve their nation.
Every vote should be counted by hand and possible in big places like sports halls where people possible hundreds of observers would carefully watch them. Also that should be televised.
State can never implement property tax and everyone can have their own land if they want and they can cultivate whatever they want and have animals and they should not be taxed.
Feel free to add something.