Anyone had any luck or have advice for self prostate massage?

take it slow, it's not a quickly discovered thing. Take it all in context. For a lot of people, it's a totally separate kind of experience than jacking off. Backdoor play is it's own thing, jacking off is it's own thing. I don't get the rock hard cock, cum shooting results, but when things are right, I can get some knee-shaking, eye rolling, totally different experiences. Accept getting clean in the shower. Let it be it's own thing, don't force any expectations on yourself. It took me a long time to be comfortable with it. It's completely an alone-time thing with me, my wife is not into anything anal unfortunately.

I have been wiggling a finger or two inside my anus, using saliva, lube or sperm as lubricant, pressing and rubbing around the inside but unfortunately I am unable to find anything stimulating. The act itself is stimulating of course, but I have not found my "prostate" that should make me feel out of this world as they say. And since my nipples are super-sensitive erogenous zones, every session I use my other hand on them instead.

Yes take it slow, explore around the hole first as there are loads of nerve endings there, then slip in a well lubed finger but in my case doesn't quite hit the prostate. I raise the game by putting a sharpie in the finger of a lubed vinyl glove and that hits the spot nicely. No need to wank at the same time, do that after a good ass play.

Like the sound of that

I love it!