Intrusive Demonic thoughts as a Christian

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.

I have intrusive thoughts about God. But sometimes it seems like I do think them myself. I don't agree with them. But it's like I get too exhausted to fight anymore, or when my mind calms down, I don't feel right without the thoughts so I think them myself and idk why. I'm pretty sure I'm going to hell.

About 2 years ago I gave my life to Jesus. I've always been a "Christian" but never truly lived liked one until then. One day I had a thought about is God real? It bothered me so bad and I went into a massive spiral. Doubting everything. My faith. if I was good enough. Am I really saved? Do I have enough faith? Is my doubt real? Is it too much? Have these blasphemous made God not want me anymore? Or Jesus? :( Then I started having horrible blasphemous thoughts, then it would go back to doubting thoughts then back to the blasphemous ones. I hated the thoughts and doubts. The thoughts are so mean towards God, Jesus & HS. It’s anywhere from evil thoughts to cussing thoughts to rejection thoughts/denying. Demonic thoughts. Literally anything bad you could think of! Even thoughts of if I really love them or wanna follow them. I feel so trapped or my faith isn't the same. Which makes me sad because I want my faith! I feel like I've gotten lazy and honestly that I don't deserve them or am "too far gone" from them. I feel like idk how to be a Christian or how to have faith or just exist tbh. I’m in a constant struggle of fear, anxiety and sadness. I wanna love God & Jesus! I want faith! I just feel kinda stuck. Please help. I feel so numb and don’t know what to do. Has anyone gone through this or has advice or tips?