Anyone purposely keep thinking about their intrusive thoughts? It's like my brain wants me to forget it but then I keep purposely remembering it?

I have been ruminating on why I have been having intrusive thoughts on a specific topic. Anyone know why? Where do they come from? It freaks me out and makes me think that it came from a real memory (I struggle with false memory OCD)

I wanted to ask if it is possible to purposely think of an intrusive thought and then shifting your mind instantly to something else? Is it still an intrusive thought if you have been thinking of it 'purposely' for a second? I dont know how else to explain it, but it felt like I was purposely thinking of it. Anyone else had similar experience what happened during intimate moments like masturbation I feel so ashamed cuz the thoughts are so bad they're either about family members children and stuff like that it feels like I think it I just want to know if I'm not alone I feel like a monster because it feels like I thought these things or like I did think these things and I don't know what to do I feel so ashamed and grossed I need help I just want to know if anyone had a similar experience to shed light on because I don't know I feel so isolated

Anyone else have repeated thoughts that play that are negative. Basically a back and forth of you telling yourself you don't want X to happen but having a thought that slips saying you do. Like being stressed out one day and saying "man I wish I were dead". But instead of letting it roll through your mind and thinking nothing of it, you obsess if you actually want that outcome for yourself and you are now scared you'd fatally harm yourself whenever you feel anxious or stressed even though you know you wouldn't. So now I repeatedly get I wanna die stuck in my head and I feel the compulsive need to say no I don't to combat the thoughts and it happens throughout the day and even when I wake up.