You are not alone if that helps. I have suffered from the same issues my whole life. Sometimes is getting so debilitating to such an extent that is hard to show your nose out of the door.
I don't think there is such thing as porn addiction, internet addiction, gaming addiction...In most cases they are symptom not the cause. Do you think about porn and surfing internet when you're outside, going for a walk, hiking, exercise, playing sports? I noticed that if i change my environment i don't think about those things at all. As i spend most of my days locked between four walls, bored out of my mind, it's next to impossible to not beat the meat (i don't think masturbation in particular is bad, mostly porn) or surf mindlessly.
I had my first skype session with my therapist last Monday and i'm going to be a tough case for him. It's going to be a long, long process...
I liked him though. Met him in person once in his office but he will not be able to go there (didn't ask him why, maybe because the virus, he is 76 year old). So we are doing skype sessions...
@Progrez, don't you think you need some help from the outside - psychologist, psychotherapist?
Take care.