How to win over my addiction

This is the biblical process for overcoming all selfishness and sin. There are many slight variations on this theme, but this is the one I have used for years now. The full book is highly recommended.
SET FREE NOWWW
https://docs.google.com/document/d/1zqVL11JjWICOHCRUDmqXr9TNC_gpb6yhRF1hKp-fxcc/edit

For PMO specifically, I can recommend my own commitments. If you follow these consistently every day, you will be free and you will stay free.
https://forum.nofap.com/index.php?threads/one-year-of-no-p-and-no-m.250023/

 

All of the things you mentioned used together along with prayer will help you win this battle. I’m praying for you brother.

 

Then Jesus said to his disciples, “If any of you wants to be my follower, you must give up your own way, take up your cross, and follow me. Matthew 16:24

The #1 way to beat your addiction is to put God in front of everything you do. Everything, and go back to see what is causing you to keep indulging in this sin. And what specific triggers have led you to fall, write these down and understand that in order to have a better relationship with Christ, one must sacrifice their own selfish desires.