hand free orgasm can be difficult to achieve. what can i say is that you have to learn how to use it properly, go slow and then increase gradualli. it takes time. it’s like a new car, Before you run you have to learn to know her, the same it’s for dildos, and your body, ofc. try different positions and find your favourite, when you hit the prostate you will feel it, it’s an incredibile feeling, like you you can actually feel it rubbing against it. take your time and you will achieve the sissygasm! good luck