Vibrator recommendations?

I bought a pure romance dual action vibrator a couple of months ago and I’ve found it difficult to cum when using it. I cum more easily when I use vibrating bullets but still feel as though I’m missing something. I also don’t usually masturbate with fingers but rather thigh squeezing sometimes with a pillow. I don’t really know why, is it a pressure preference or something? I guess I don’t know much about masturbation

I’m F 21