Role playing is what happens in your head.
So expand your mind to be both male and female, with all the goodies of each, and then drench that sucker with silicone lube, all while wearing your sexiest nightgown (it's washable, and so are the sheets.)
I had somewhat the same problem, and after trying testosterone, Viagra, Cialis, several pumps, and even direct injection, I got a penile implant. Three-piece, hydro-inflatable robocock (my name, not theirs).
The sensation is still there and I can keep it up as long as necessary. Ejaculation isn't as powerful, but orgasm is just as good. And my wife absolutely loves it.
My medicare pays for all but $4,000 of the $70,000 cost. I can do that much.
But it seems most (all?) HMOs will not cover it, so I had to wait until the next enrollment period and go back to original medicare. Annoying, but worth it, even though now it feels like I have three testicles.