why do I constantly feel guilty about my thoughts? I know that they aren’t true but I just can’t stop feeling guilty about them :\

I am a christian guy who grew up in a christian community and family. For as long as i remember, ive had horrible thoughts about all kinds of things that i dont know where to begin. Due to my extreme thoughts, i feel as if i am unworthy of practicing my religioin, such as praying, reading, meditating, etc. I feel ashamed when i go to church, as if i dont belong there because i feel like i am secretely evil, and that God knows i am evil and i am committing blasphemy by going there, and refusing to "repent", from my thoughts. But then again, my thoughts are just thoughts, sure. So whats the problem? - The problem is that in my faith, i have been taught that we must control our thoughts, so they do not get power over us to make us commit sin. Such as "If you think lustfully about a woman, you have already committed adultery with her in your heart". This verse has killed my self esteem, due to the constant unwanted sexual and disturbing thoughts. It makes me feel like a monster, who secretely just wants to abuse and be horrible to people, even though i know very well i do not want this. Sometimes i think horrible things about the people i love very much, such as my girlfriend. It feels so wrong and evil, even though i know it isnt my true will.

Does anyone else’s OCD convince them that bad thoughts are not actually that bad…. Like I know they are so why do I feel like they arent😭😭

I've had a horrific subtype that has been affecting my day to day life. I think it's snuck in due to good things occurring in my life. If I can't forgive myself for my past, why should others? I'm happy knowing I'm not alone with these thoughts, but knowing it was OCD all along and I could have suffered so much less if I was diagnosed as a child... Decades worth of compulsive checking, thinking I'm worse than a monster... I just want to breathe normally again. I feel guilt with each breath. It's too much.