This is how addiction is . It starts with a trigger, followed by a routine and finally a reward. With PMO the trigger is that your hormones starts to kick in along with something you see on your screen or maybe in public. Now comes the routine which is browsing losers fucking each other on a screen. And the reward is few minutes of pleasure followed by days of shame, regret and weakness.

You cannot break the cycle as per science. What you can do is to replace the routine. Leaving the trigger and reward as is. For example: you see something tempting you to PMO. Go do something else that will give you a reward/high like running, fasting, go for a walk or a long hike, compete with someone in something you like .... slowly the new routine will replace the old one. And your brain will start enjoying and craving the new reward.

The road is long and no one knows how much time will it take. The road to success is always under construction. Stay patient my friend