Help Me Achieve My First Prostate Orgasm

I've always heard that prostate orgasms are 10 times stronger than a regular orgasm. On pornhub I would always see videos of guys who would achieve such orgasm using only a toy whether it be a dildo or a toy and be able to cum loads without touching their dicks at all and a lot of times their not even fully hard or hard at sll.vFor the past few years I have attempted to feel that pleasure starting with cucumbers and then an 11 inch fully insertable dildo. I thought the bigger it is the better chance of having an orgasm would be and it would feel good but only cause of the idea of taking a big dick. Id manage to put all 11 inch inside me and ride the base of the balls but it wouldnt get me close to an orgasm at all so I ended up stopping my search for a while.

That was 2 years ago, recently I acquired a massage gun which I was using to vibrate my cock to masturbate with which gives me an amazing orgasm but only to my cock. I started to put the small attachments that look like a tiny prostate massage toy and try to vibrate my prostate and I felt pleasure but not enough to cum because my ass would tighten up so much that it would push out the toy. I ended up putting on the ball thats a size of a tennis ball and managed to shove it in my ass so my ass tightens at the bottom so it wont cum out. From this i was able to get myself moaning because it was vibrating my prostate and when my ass would tighten to try and push it out it would strengthen the vibration on it leading to what i felt like was an orgasm but I didnt cum whatsoever.
I then heard that it was a dry orgasm which is different from a prostate orgasm. I went and bought a 7 inch glass curved g spot dildo to attempt and milk myslef or give me a hands free cumshot.

Please if anyone can give me any advice on how I can achieve this strong prostate orgasm while blowing loads without touching my cock, please let me know in the comments and try and be detailed so I could understand fully. Thank you