Turning 18 Tomorrow and everything feels off

Guys i am turning 18 tomorrow but now i feel super old. Every since 16/17 yo i see i feel they are too young and i am too old.

Maybe it got in my mind that i am gonna be an ‘Adult’ from tomorrow but today it feels devastating, like my childhood has come to an end.

Does anyone else also share the feeling of having a year less on planet Earth rather than having fun at birthdays??? I started feeling like this in 8th 😭😭😭.