What causes libido to be somewhat high but weak erections?

The weird thing about this condition is even though I have shrinkage and numbness in my gland I still struggled with porn addiction for a year or so. Only started beating it this year really.

I don't understand hormonally how thats even possible. It was actually difficult to quit for more then a week. Its like part of me is still the same 19 year old I was years ago but then my penis is 50 years old. Most people with ED are asexual but for me I have noticed a small drop off. And my penis still works its just 40% less blood flow and numb at the tip like its broken.