You can leave most countries and renounce citizenship, typically with some hoops to jump through but it can be done.
The questions of where you'll go and how you'll support yourself are something that you'd best figure out before starting that process, because after you start your country of origin may well say 'not OUR problem anymore' about you.
The questions of where you'll go and how you'll support yourself are something that you'd best figure out before starting that process, because after you start your country of origin may well say 'not OUR problem anymore' about you.