Porn / sex addiction
There are many helpful resources to help men navigate life when they are struggling with things like Porn use and sex addiction. These are available with or without the need for counselling but the important point to make here is that accountability and journeying with others throughout our healing forms a large part of staying on course in finding true freedom.
Naked Truth Project
There are a wealth of resources here to help you on your journey to kick Porn well and truly out of the park.
Pivotal
John Bevere
From a Christian perspective, John Bevere has a scripturally based course which runs over ten weeks which is easily accessible.
I would add that whilst these resources have been chosen, each person may find something different which works for them so I do not recommend any particular resource, but offer them as options for you to consider for yourself. If I were to work with you, I would consider you and your particular situation in what would work best for you.