Masturbation is Frustrating...

I’ll stumble across erotica online, read it and get turned on. I’ll try to masturbate, but I’ve never orgasmed. I’ve done humping, shower head, and clitoral stimulation but nothing. I get close, but stomach feels hot and my feet get tingly, but nope.

I’m asexual, so it’s more of an annoyance because I can’t finish and I’m just stuck. I can’t even fantasize about anyone because I’m not attracted to anyone that way 🤦🏼‍♀️

Help?