I want to change my age in the passport because I feel very old

I’m 21 and I can’t stand it, I’m so so so horribly old. I’m like, old, like an adult that needs to do adult shit??? In my country people at the age of 21 already have a kid and are married, I don’t live in my country I still do crazy feel old. I’m only starting my music career, it is so horrible, I’m old and doing rn teenage stuff, I still wanna party and do stupid shit and enjoy life, I feel like a teenager, I don’t feel like an adult at alllllllll like at allllllllll. My family and everyone around looks at me like I’m deeply ret\*\*ded, but idk tbh, I can’t fit into the typical adult expectations shit. I feel bad and like I fcked up my life, my teenage years (from 16 to the end) were just horrible and I had zero life and was crazy depressed. Now I’m trying to get back to life. Even tho I had great years until I turned 15, a lot of parties and etc, I still feel so horrible. I don’t want to go rn to some 9\\5 job, then met some dude, marry, have kids and xdddd all of that sounds depressing af. I just wanna focus on making music, but I feel like it is too late because most of the musicians start as teens, and I’m starting to sing only at the age of 21 HORRIBLE. I wanna change my birth date in the passport omg.