First of all, I want to tell that I am new to this forums to, but I have some experience fighting pmo addiction. Of course, I have relapsed many times too. Unfortunately, giving up porn is much harder than we can expect before trying it, so it is ok to fail sometimes. It’s not ok to stop fighting!
I would recommend you to read and study about the mechanism of pmo addiction: there are plenty of lists with books, podcasts and other stuff, which explains you deeply the way porn works. It will definitely help you to realise the importance of this problem.
Also, it is good to analyse your own behaviour. Right down every move, every thought that leads you to relapse. Think about it. Change your lifestyle in a way, which avoids this thoughts and behaviour. For example, you can lower your web activity to using internet only for your work and studies, because, unfortunately, social media is full of temptating materials.
Be smart and willfull. We all can beat it.