why the state does not always make money, because if a country is printing too much money, the value of that currency will go down so it will cause more problems, that's why they prefer to owe rather than make money
Exactly right!
This calls for the inflation of the fiat currency.
When they will print more money then it will increase the supply of the fiat thus though the demand grows you will still have lot of supply. This way the circulation will keep on going in negative way. Thus it will do the demonetization of the currency.
Thats why they dont print more.
Yes you're right it is just like the law of demand and supply. So if they print more fiat then it will cause a big problem just like the value of it, it would be stable or the value would decrease. They control the Money runs in one country so that they can make fiat stable.