OCD trying to Mess Up everything?

I’m having a big OCD relapse and would like to hear anyone’s tips on how to be present and healthily deal with these intrusive thoughts and the “need” to preform compulsions. Thank you!!

So, I know my capacity to get fixated on things. And it's normally something that's relatively remote but, my latest issue is really getting to me and I was wondering if people have any advice. I'm avoiding getting too into specifics, as I don't want this to get reassurance-y but, in essence.. I came to the realisation recently that people who I'd been "friends" (feels like the wrong term now) when I was younger were not very nice people, and normalized a lot of very unpleasant behaviour towards other members of the group. They really normalized it, sold themselves as figures of authority, as older and more responsible and grown-up than others, and looking back, they acted horribly. And coming to this realisation, that I'd been manipulated into just accepting their behaviour has just... broken me. My OCD has latched onto it and I can't stop feeling irreversibly tainted by it. I've talked to others about it, and they've reassured me, told me it's not a big deal and that I hold myself to too high a standard, but none of that sticks. I feel better for a bit, then think 'Maybe when you told them you were skewing it to make yourself look better' or 'Did you leave out a crucial detail'. I keep ruminating over and over, trying to remember exactly how everything played out, trying to figure out if I fed into the behaviour, if I did something bad myself (because y'know, I feel like I was accepting of it at the time, so what does it say about my own values?). I know I need to stop doing all this if I want to improve, but then some part of me keeps saying 'So, you're just going to let yourself off the hook then?' Normally, I can rationalize my own fears to some degree, assure myself something won't happen, but the realness of the situation, and the fact I only came to understand the reality of it because the thought had been bothering me means it feels so much more all-encompassing. I know confessing in itself is a compulsion, but I keep feeling that if I'm not I'm somehow concealing what I 'really am' from others around me, and any positive interactions are me deceiving them in some way. I feel like I can't enjoy anything in life right now, and a good part of me feels I should not enjoy it ever again. If anybody has any advice on it, I'm all ears. Or even hearing if you relate to these feelings, I might appreciate the solidarity at least.

so I need to get back into ERP, but it’s so hard to manage these thoughts and learn to deal with them. like I swear my mind has to make everything about it. Like every time I clean my room, my mind’s like yup make sure it’s clean so when your parents find you, or something so stupid like if I get a headache, my mind convinces me that I like the pain and that that’s why I get my thoughts because I actually want to do it. It’s so exhausting. Because I know I would never want to take my life and I treasure my life so why does it do it to me? It’s hard to comprehend the fact of these thoughts too because I don’t know many people with this exact theme. It’s such a scary feeling. And I’m constantly questioning whether I have actual depression or if it’s just my OCD. Yes I have been diagnosed with suicidal OCD, but my mind still tries to convince me otherwise. I just don’t know how to let these just sit and pass without panicking.