I have been thinking about asking this for a while here now and hopefully somebody from this smart community can enlighten me Why does debt matter when you can

I have been thinking about asking this for a while here now and hopefully somebody from this smart community can enlighten me Why does debt matter when you can print your own money? Is it just inflation that we are worried about when we “pump” too much money into the economy? In fact why does imf and world bank matter/exist when countries can print their own money? May be it’s not about the money but selling developed worlds “expertise” to build things in developing countries under the guise of a “loan”. Are these banks basically saying here is xxx million or billion to build a power plant and you can only use this money to pay companies from “my” country that will build your power plants ??