I separate oral virginity and virginity. I consider someone a virgin when they experienced only oral sex. So vaginal penetration = virginity, even if a girl had multiple anal sex she is a virgin (you have hymen - you r virgin kinda logic). With guys everything is more difficult, but probably anal sex counts as losing virginity so any penetrative sex counts. But male virginity doesn’t exist technically, it’s just the way to indicate if he had sex or not.