help i feel frustrated

long story short i’m a lonely (never been in a relationship before) virgin. also a lesbian (21F) i live with my parents and am going to in person shop tomorrow to update my collection but i am so frustrated of a couple things.

1. i cant seem to “finish” my orgasm. i use vibrators and dildos but would love some recommendations
2. positions!! i have been only riding and on my back is there any other self pleasure positions to try?
3. any recommendations to get myself ready and “wet” enough?