I feel pathetic and stuck

im an 18-year-old guy, and honestly, I'm feeling pretty low right now. I used to watch a bit of porn and occasionally engage in self-pleasure but I never orgasmed, until I got my first girlfriend at 16, (She was 18), that things really changed for me. She opened up a whole new world of sexual exploration for me. It was during one of our phone conversations that I finally experienced my first orgasm after she encouraged me to play with my nipples. I felt a burst of pride in that moment.

However, not long after that, on my 17th birthday, she broke up with me, and everything seemed to spiral downward from there. Over the past year and a half, I've found myself relying on porn more than I ever imagined—orgasming three to five times a day—often without a second thought. Im over the girl emotionally, I have absolutely no attachment to her but my brain had been rewired to crave intimacy so I ran to porn and now its branded into my mind.

Now, I can’t help but feel that my preferences are becoming more and more shameful, and I’m stuck in this cycle. I Also fear that I may be experiencing some type of erectile dysfunction my erections are much much weaker than they used to be and i'm also getting body dysmorphia and feeling like my penis isn't good enough. I need help I really do and I want to change. I want my mind and body back, please help me.