idk how to deal with my father wound

so I have what people call daddy issues nowadays even though I don't like that term. My father left when I was 3 months old. When I was a little girl I didn't really realise what it meant and thought my situation was normal, turned out it was not. people tell me its going to get better with time but its actually the contrary, the more I grow up, the more im confronted with what ive actually lost, the worse I feel. It's gone to a point where when I go outside and see happy fathers and daughters together I just want to cry and it makes me so bitter and I don't know what to do about it nor if its ever going to get better because I don't want to be bitter and crying and having an anxiety attack every time I get out simply isn't possible.

I thin that in my hearts of hearts I just want a dad but that's probably never gonna happen, I know what my problem is but it doesnt help at all.