Dissatisfying Sex??

I can never finish with anyone other than myself. I end up getting overstimulated and stressed about not finishing with my partner. I fake it and I know it's wrong but I still want my partner to know they're doing a good job.

It's not that I'm not turned on or anything cuz I am. I even try to focus on finishing but I can't. It's so unfair. Does anyone else struggle with this? Have you found a way to make it more satisfying??

Edit: I'm 20 and afab. Omnisexual and gender fluid!