i am a us citizen and i have a 12 hour layover at the Paris Charles de Gaulle Airport before my next flight. is there any way i am allowed to leave the airport, explore the city, then come back into the airport? i dont have any checked luggage.

this is my first time traveling alone so i dont have any idea about what travel documents are needed if i leave the airport or what security i have to go through. if anyone is familiar with this process can you outline what you need to go through?

thank you!

edit: btw im an unaccompanied minor, the rest of my family is arriving at the destination after me. i am pretty mature and i dont mind travelling alone at all. i dont have a lot of money though so i guess thats the only issue for transportation. also this will be my second time traveling alone but my first time at a layover. my parents dont care what i do while im there as long as i dont miss my flight

i am a us citizen and i have a 12 hour layover at the Paris Charles de Gaulle Airport before my next flight. is there any way i am allowed to leave the airport, explore the city, then come back into the airport? i dont have any checked luggage.