I'm lost. Need help pretty bad.

When I was 12, I watched porn and masturbated for the first time. I am 22 now and still struggle with it. I'm married now to my wife who's 23, and I try and talk to her about it to keep myself accountable to stay away from it. But the fact of the matter is, I'm still addicted and I don't know how to get away from it. I consider self harm when I get the urges in hopes that it distracts me enough when the wave passes. I've tried going to my wife when I get these urges, but it's often so inconvenient that I feel like such a burden to her to ask of her all the time. I've prayed. I've tried decreasing my screen time all around. I don't really know how to deal with it anymore. If anyone has any advice or has been in my shoes, I'd greatly appreciate it.

I know part of this is what marriage is for, so we can healthily release our sexual desires in a way that glorifies God. But why can I not seem to break free from this?