There are people here on the site who masturbate if their penis is flaccid, even if the porn is extremely extreme, and they recovered
I have met several of them and they are still recovering... for about 5+ years now... be strong! The main thing is not to relapse!
At your age, there is a good chance for you to recover in 2 years. Realistically, it is closer more like 5 years for a full recovery from PMO addiction at your age. This addiction is worse than drugs or alcohol in many ways. You can be more or less a normal person by the time you are in your early 30s. You will still have time to start a family and to live a full life.
some people experience the consequences of the addiction many years after discontinuing the PMO consumption. This is probably the worst addiction to have in terms of how long it takes to recover
In that case, you will probably live the rest of your life as a PMO addict. I think that's worse than physical death. I am sorry, brother. If nothing else works, give 12 step recovery a chance.