AIW for not calling out my ex friends weird/problematic behavior?

back in 2020 (i was 14 and he was 13) i was friends with this guy that made me super uncomfortable.

there’s many reasons why but some of them are: some of his friends were talking to IRLs of a celebrity he and i liked at the time and they would ask personal stuff about him and share it between each other, he then would share them to me but i wasn’t comfortable with that because i judged that this was stuff i shouldn’t know about. he also once sent me porn as a joke because it looked like a celebrity, sent me nsfw art of fictional characters that are canonically minors, sent me nsfw fanfiction of two celebrities that were 16 and 18 at the time, said the n-word (he’s white) because "who cares if i say it now no one will know", i also did nsfw roleplay with him once and he made me take the bdsm test.

i was very much uncomfortable about all of this but i’ve never called him out for anything. i just wanted for the conversation to move on to another subject.

there was also this once time where he sent me a personal picture of that same celebrity mentioned earlier in which he was wearing a dress, it was clearly a tutu, a costume, not a real dress you’d normally wear as an outfit, but he still made a joke saying "oh haha he’s trans!" (my friend is trans but wasn’t aware of it at the time if it means anything.) and again even if i was uncomfortable with that joke, i still played along and tried to move on from the subject.

and i don’t know how to say this without me trying to play the "victim" or anything but he was emotionally manipulative with me, he’d threaten to kill himself if took breaks from social media (that i used to take because of him), would constantly say he was going to hurt himself then go to sleep while i was in panic, get mad if i talked too much with other people, made fun of things i liked etc etc. i’m mentioning this because my values are very important to me and i think the reason i didn’t drop him sooner (because i ended up doing so when he finally distanced himself from me) is because i was scared to do so.

i still feel incredibly guilty about not calling him out and even acting like some of those things were funny when they weren’t to me.

i have ocd and have been spiraling about what this means about me, because i know that even if i never initiated those things, i still participated in it by letting him do it and that’s not good. i hope this is the right place to ask this to, thanks