Is my vagina broken?

Ok, so I’ve been trying to masturbate for a while, but I never have been able to orgasm... idk if I’m not doing it for long enough, or if something maybe isn’t right down there. (A little tmi) it feels really good at first, but I kinda go numb after a while and I eventually just feel like I’m almost used to it... if that makes any sense 😅. I’ve only ever used my fingers, so do I need to by something that vibrates?? Please help!!!

(Edit)

I’ve watched porn while doing it, and I’ve used different amounts of pressure, but I still can’t orgasm....