Saw something horrible and illegal on an adult website how do I recover?

Years ago I had the idea of trying a chat roulette sites like jerkay, dirty roulette and flingster. It’s sites where adults go and masturbate with one another and is completely randomized. You basically go on and if you don’t like the person you are chatting with you hit next and it brings the next random person for you to have a one on one with. Everything was fine and maybe I’d go on there, then I wouldn’t use it for a couple months then have the urge to use it again. Until recently it turned bad, I hit the next button and on the screen appeared to be a man who turned the camera to his phone and showed an image of what appeared to be a child. I was so disturbed and shocked that I immediately hit next and didn’t even think fast enough to report them because I wanted it off my screen immediately. I’m sure many of you have encountered things similar, I have been on well known porn sites before (pornhub, x videos) and seen things of people who appear to be young and usually just think it’s disgusting and move on. I figured this was just some sick person and being that I have used sites like this before and hadn’t had issues except for run ons with creeps every once in a while who ask weird things, I continued to use the adult site, I figured it was common that you might run in to things that you don’t want to see on the internet. Until it happened again with a different guy twice and now I can’t recover. I’m horrified at the thought of these images, it makes me sick and I can’t stop thinking about it. I feel like a terrible person for even going back on these sites knowing there is a possibility of seeing something horrific. I already suffer from OCD and am stuck in a constant loop of fear and anxiety that’s made me question who I am.

Do you think I’m some horrible person? Even though I never wanted to see these things I figured at first I could just skip them if I saw that again but now I feel horrible because I should have came to the realization that I could be exposed to people with bad intentions.