Does anybody else not know their age?

Like you have a legal age but no one knows your actual birthdate. Does it bother you? Do you tell people? And how do you deal with it?

I know it’s literally not the biggest deal in the world at all and I feel so dumb for feeling like this sometimes but I almost feel so lost and curious and angry that I never got the privilege of knowing my birth background. I used to be so embarrassed about it when I was younger when people would find out because they would make fun of being and old person in the same grade or not fitting in because I was too young because nobody knows. I’m lot so much embarrassed anymore than I am frustrated. I’ll tell anybody who asks but I just give them my given date when people ask when my birthday is.