I took poor care of my penis through dry humping and i'm living with the consequences

I've never posted on reddit so i'll try to keep it short. I watched a yt video called "girlgamer battles chronic masturbation" and in it the guy was speaking to a girl on xbox live and she said she masturbated for a period of 10 hrs. I watched this around midnight of april 17th and I started to grind against my sidepillow. Idk if I was trying tk emulate what this girl did but I just started to stimulate my penis. I have done this kind of as foreplay for a while throughout my teenage life ,but this time I kept grinding even after I felt a burning on my penis. I finally stopped andtook a look and it looked f**ed up. The underside of my penis was like pink and there was like a abrasian above my circumcision line. I was scared so i washed off my penis and put some lotion on and went to see the doctor that same week. He gave me some mild hydrocortisone but that didnt work and i have tried other things through his suggestion or my own like healing ointment and man 1 man oil,but not much effect.Fast forward to near sept now my penis still isn't right. The underside has healed to what it could be,but when flaccid or erect I could tell the epidermis is thinner and weaker in the area above my dark line I'm seeing another doctor ,but honestly idk what she can do for me. This isnt a common medical condition this is just something I did out of stupidity and recklessness. My confidence is completely shattered and saddest part is im so young at 19 and never got to experience the pleasure and joy of sex. Everyday feels like torment and agony because of the decision i made and I retreat to my room as often as I can because of how bad I feel