How do people deal with shame and guilt from real event or false memory ocd?

I would really appreciate it so much if someone took the time to read this and help me. I don’t know what to do anymore. I haven’t posted here in awhile. I had my OCD managed pretty decently for a year or so on medication, but I had to stop taking it, and after around 3-4 months, the OCD has become unbearable again. It used to be much more surrounding existential themes, eating, and others, not really real event/false memory stuff. But now it’s gotten really out of hand and I don’t know how to do it anymore. It’s surrounding a time of my life a long time ago. It was a dark time. I wasn’t myself and I was going through a lot of things, and I did a lot of things I regret. I self-destructed, embarrassed myself, and wasn’t good to the people around me. I was able to get my mind off of it for a long time, even though I would still think about it a good amount. I was able to be in the present, at least moreso than now. But now that I’m off medication, the guilt has become my obsession again. I can’t move on. I can’t do anything without thinking about all of these memories. I’m obsessed. I’ve started hating myself again, so much so that it’s hard to do anything anymore or believe I deserve anything good. The people around me tell me it wasn’t even that bad, but to me it was. To me, I failed myself, lost myself, and failed everyone around me. I can’t stop thinking about every person I said something wrong to or every time I screwed up. I’ve now started to convince myself I did terrible things I can’t remember, and that my mind just can’t deal with it. And that’s why I feel so guilty. There’s nothing to really support this though. But I’m starting to really convince myself that’s true. I’m trying not to listen to it, because I’ve convinced myself I have hit people with my car before and haven’t remembered when I absolutely didn’t and I know I never have. I drive back over and over to check there’s no one, even though I never heard any bang or felt myself anything. I can convince myself of some crazy false memories. So I know that I shouldn’t listen. But it’s hard not to when I have this guilt gnawing at me constantly. I come to conclusions that this guilt must be because I did something terrible that I don’t remember, even though I already think the things I remember were bad enough. But I would know by now right? If I did something bad I don’t remember? I don’t feel like this all the time. But it’s a lot of the time. But maybe that should be reassuring, that I only start obsessing like this when I think to. The past haunts me though. And I can never be in the present. I’ve started to resort to some unhealthy behaviors to distract myself or help me work towards something. I am starting to hate myself so much and feel like there’s no way I’ll ever be able to get out of this loop. I feel like I just can’t do this anymore. Maybe I need to go back on medication. But I don’t know. I don’t really want to. But will I ever fix this without it? Why do I feel SO guilty, all of the time? I do all these things for people because I feel indebted to them, because I feel undeserving of everything. I feel awful about myself. I don’t know what to do. Does anyone else deal with this?

Real event, legal ocd, and false memory ocd around events that happened years ago but never bothered me till a month ago and now my life is being destroyed because I feel sooooooooooo guilty

Currently feeling extremely shameful for something I did in the past. Any advice? I've had periods of coming to terms with it and understanding that it was just a mistake, as no one got hurt, but now it's resurfacing again.