Anyone else who developed really poor hygiene skills because they were never taught anything?

Honestly my nparents never really showed me how to take care of things like my hair, my period, shaving, etc— typical hygiene things that most people learn when they’re kids. I remember constantly being screamed at for having bad hygiene habits and not showering for a couple of days but this was also when I was like nine or ten— so why was I getting screamed at? It’s even difficult for me now but since I’m pretty much self taught, I chalk that up to more of my own unwillingness to take care of myself in general when I’m feeling pretty down. But honestly if my school didn’t teach me anything when I was a kid I don’t think I would have learned anything at home.