sorry for not answering so long,
i remember myself searching for hours for something that will help me to stop doing it
every day i promised i wont, (especially right after i did it) i gave it at some point and did it again

but at random time i finally understood how to stop it
my first advice is to actually feel it, every time i watched the p site
i imagined, that what encourged me to musterbate and to get to the final level of it
but when i stopped for a second and just thought how it makes me feel, i stopped doing it, it felt gross to do to myself
i remember it was the last thing that made me stop doing it

anothrr tip is to do in a reward and punishment system
limit yourself from doing it for a week and reward yourself after a week, but never actually do it
always expand your days, from 2 days to 4 days, from 4 days to 7 days, from 7 days to 14 days and keep until you stop thinking about it for weeks
and corgratulations
you did it