Sharing gf's & exg's nudes

Hello everyone
* warning - may be trigger for some of you, althought I tried to do that as less as posiiable*

I feel in a pretty difficult and depressed situation.
I was in a situation where for many, many years I masturbated every day and sometimes several times a day. Porn was not the main part. The main part was sharing photos and videos I took of my ex while she was sleeping naked or showering without her face. I know it's something terrible to say but I was thrilled by people's reactions. As time went on I needed more to get excited and masturbate and I had already gotten to the point where after some long conversations I revealed more personal information like pictures with faces and even there.
In between I had a new girlfriend who at the beginning of the relationship I completely stopped with it but in time I went back to it and got to a point where I shared it too.
We broke up.
After going through all this I got lucky to NoFap. I made a long way and got to 100 days without masturbating and without sex. It was hard but it was a great time, I felt stronger, more confident and proud of myself that I stopped doing offensive things.

At one point in the 100 day zone, I became very horny, even girls in the gym or on the street in a certain outfit made me very aggressive in thoughts in my head. Slowly I got back to some porn sites.
At one point my last girlfriend wanted to go back and we tried to go back and also slept.
In time I went back to the exact same pattern of sharing photos after she sent me (after a lot of pleading and the fact that she is a very good girl) agreed to send me nude photos and teasing photos.
I could not control it and started sharing it in chat rooms and again I went back to a place of masturbation every day for hours, hurting my work, our relationship, my relationship with myself and hard feelings.
I don’t want to think I went that far this long way and went back to the same point.
I could not delete any pictures and although I tried to keep them away from me, I went back to them every day. Every time I promised myself not to do it, in the end I went back to it.
I feel this loop again and try to get out of it. Maybe is the "power" of control her pictuers without her idea. im not sure what is that. im going to professional help for everything im doing but still cant get out of it so far.
I'm glad I got in here again after two months out of the process. I very much hope that with your help I will enter a new path and this time forever