I'm desperate. I wanna get my nipples sensible but I just can't I've tried a while back but didn't get anything and just forgot about it. Is there any training I can follow just so I can finally feel it and maybe even orgasm from it? The only thing I don't wanna get into and I know it works is pumping and clamping, I just really dislike how they turn out and I could never be shirtless ever again

Both links for nipple orgasm guide aren't working anymore. HELP