18 year old college student starting reboot

Hello, I am an 18-year-old boy who just started college. I have never had trouble having a girlfriend, or even getting and sustaining an erection in the past, but this past year I have noticed it become increasingly difficult to get hard around sexual partners, to the point where I am barely able to ever. I rarely wake up with morning wood and rarely have erections in the day. I believe all of this to be PIED, and really want to get over this now.

 

I’m a very confident that I can complete the 90 hard mode reboot. But I am just wondering if this sounds like more PIED or a venous lean. I only seem to get erections while watching porn, sitting down and with direct stimulation. If I stand up the erection normally goes away. Sometimes I get very hard with porn but normally not fully hard just slightly, like even with porn it’s difficult to get very hard. Even while around a girl I can only get slightly hard and need them to stimulate me for even this to occur. I have read about Venous leaks and this sounds very scary. Does this sound like a classic case of PIED or a Venous leak? Thanks for the help