Can someone explain quiet bpd to me?

Ive heard that people with quiet bpd don't split on others and instead their symptoms come out more internally within themselves. When people with quiet bpd split are their splits still from idolizing and then devaluing people and they just dont verbalize their thoughts like someone with the petulant subtype of bpd would, or are your splits not revolved around people but more around yourself? When people say they split on themselves does this mean you go from thinking really highly of yourself and then something happens and you start devaluing yourself, which is why the splits are only inward and not outward?or do your splits have the same triggers as any other subtype of bpd, but you turn your emotions inwards because you're more scared of people leaving you if you split outwardly and lash out on them? Im only just speculating here not trying to assume anything, just seeking clarification. For those with quiet bpd can you give an example of a situation that might cause you to split, and explain your thought processes and what happens during it? tysm💗