jealous anxiety

so last year had been like a rollercoaster in terms of PPU for me because i was hooked on and off on porn and this year porn did the most damage on me personally.
First of all my addiction had got a bit out of hand (no pun intended) and I couldn't stop to watch not just regular porn but "cheating wife" or "cuckold" porn. in the latest period i was kind of okay with watching porn but now as i have a girlfriend and this kind of porn gets in my head I am freaking out. one day a thought of that made me stay up all night and worst of all is that I can't even talk about this with my girlfriend because I don't know how will she react. I feel rage and anger whenever i feel like that and it is one of the worst feelings out there. In summer I had one month off porn and at the end of the month that feeling was gone fully but one day I was stressed as fuck at the job and couldn't handle the pressure so i took out my phone and did "the job". after that i had one or two week off porn in some periods (I do masturbate I just want to quit porn), but at the end i can't do it in long periods and that feeling is going and coming back.
I really want to quit but I just get drunk or too stressed and after that i go back to porn.
I try my best to quit porn but still if you have any tips on overcoming that jealousy please tell me.