Greetings everyone, noob here

Hello guys!
I've read so many posts here that encouraged me to start this 30 day NoFap challenge. I'm a 22 yo male who has a porn addiction. So here goes my story:
I've been having a hard time getting hard (no pun intended) with several women for a long time but just didn't care at the beginning, just popping a pill and enjoying it. Then, I thought especially for my age this wasn't normal and decided to see a doctor. Since private healthcare is too expensive here I wanted to go to a government hospital, but the doc didn't even care about the situation. He just checked my blood results, said they're fine, and had a quick inspection on my testicles to see if I had a cyst or some anomaly and that went normal too. Just wrote me another pill and said it'll be just fine.
Well, I as you can imagine wasn't satisfied at all. Since I can just easily get fully erect with a porn I thought I might have PIED. Thus I wanted to give it a go, here I am. On my 3rd day of 30 day NoFap challenge. I'm all ears for your suggestions/comments. Cheers!