How to fight masturbation

You should know that these things are spiritual. They have physical triggers. If I say think of a "cup" you'll see an image of a cup and start thinking about it. What do we use a cup to do? When do you mostly use the cup and what color is it?
Your thoughts are now still on the cup, if I'm right. Now think of an elephant (am sure you've thrown away tge image of the cup away) now you're thinking of an elephant. Thats the same thing that happens when it comes to sex.
They're key routes to trigger it e.g porn or sexual images. If you look at movies with sex scenes or hear music with sexual content, this is the bait that's being thrown to you that leads you to porn then masturbation. So work on tge small baits not only the pit.
Above all CHRIST JESUS can give you the strength and the HOLY SPIRIT guidance to help you out.