Welcome Mahmoud, you are not alone. There are many people here (and around the world) recovering from the same thing.
There are many threads on Talking Sober about this. If you go to the search bar and search terms like “porn” “PMO” “masturbation”, etc, you’ll find some.
Here’s one that has been fairly active over the last few months; it might be a good place to start:
PMO - Porn, Masturbation, Recovery
Don’t give up. One day at a time 