Hi Jasmin, welcome! There are many of us here - men and women - recovering from exactly that. You are not alone.
As noted above, Patrick Carnes has many excellent books. They focus on sex addiction specifically but many of the concepts are similar to porn & masturbation recovery, so there is a lot of overlap.
There are a number of good resources here:
Don’t ever give up. You are a good person and you deserve a safe, sober life where you can be your full self, and have a healthy relationship with yourself and, if you choose, with others. You’re doing important work here - and you will reach your goal.