Why do parents make us insecure?

No really, i've been re.reading my journal of 3 years, in which i don't write that much btw, and also made lots of self reflection, and i'm not even joking or exaggerating when i say that ALL of my damn insecurities are my parents' (principally my mom's) fault, don't misunderstand me, they're great parents, but that doesn't mean my affirmation isn't true.

I know they must have good intentions with all their comments they do to me, but that doesn't mean that they don't hurt and make me overthink, damn, i wouldn't have 4/5 of my insecurities if it wasn't because of them, most of the are things that don't actually matter, like me having pimples, that i have a little tummy, that i look "like a boy" and i'm like, okay but... wasn't i supposed to don't care about what others think?