Prostate orgasm

I’ve been playing and experimenting with my prostate for a while now and I love it! However, although it always feels good when I play with my aneros, I can never achieve a full on orgasm... I get to a point where I get really close where it kind of builds up but then it sort of fades away a bit, I can bring it back to that same state soon after but I never really seam to get to the explosion that I kind of expect....I can only get there once I start touching my cock and stroking it... is this normal and I am expecting too much? Or is there anything I can do to come completely hands free? Obviously it is possible as there are quite a few videos of guys doing it... which I find quite a turn on to be honest! I would love to hear your thoughts on this guys! Much love! And keep sharing videos of you doing it! Love it??