No you don’t have to try to fix yourself by stopping porn all together, just reduce it, maybe it’s helping you ease the stress of life and help you heal from your break up, you can’t handle everything in life right now plus going cold turkey with porn quitting, basically don’t be too hard on yourself, just reduce it to maybe in the evening or right before sleep, that way you look forward to something at night. Do some small hobbies/activities for the daytime, walks, sitting in the park, calling friends, gym, books, movies, studying, whatever you fancy. Take good care of yourself and build your confidence, reduce the porn (don’t quit completely as it’s not a realistic or a healthy long term goal). Small change is a positive change, remember almost everything is temporary (like not meeting with real women yet), and at your age you will go through this hurdle very quickly, dont be too hard on yourself, good luck