Can't feel pleasure without vibrator

I (20f) have tried masturbating with only my hands/pillows since I was 14, but I genuinely can't feel any pleasure, it feels no different from touching my arm for example; I have tried only external/clitoral stimulation but nothing, and getting horny has never been a problem either so I don't know what is it

Recently I bought a vibrator and finally I can feel pleasure with it but I still can't orgasm and I'm so frustrated