How to tell if you were adopted ??

Cuz like, idk. I mostly believe that my parents that i knew ( my afro-caribbean mom, and my american dad) are my parents but like.. Something feels off and i cant put my finger on it, i dont really look like either of them, i used to have curly dark blonde hair when i was a kid and my mom didnt have curly hair nor my father, i have no features of my dad or my mom, even though i am mixed it would make sense for me to atleast have something of my parents, right? and even though my aunts tell me i am just like my mother idk, my mother also used to joke around telling me i was adopted and then laughing when she was drunk ( she was an alcoholic and she unfortunately passed away around 1 year ago :T) so yeah idk, if you guys could give me signs or something that would help me ty

here are pictures 2 help you guys judge


my dad

my mum

(its probably tilted but ok idc xd)