I'm really scared I might have done something wrong in my faith

Assalamu alaikum. Please be kind, I'm really embarrassed and I deal with OCD-like thoughts where I keep worrying about things I've done wrong. I need help. And if you feel like judging me, please keep it to yourself. First, is there a way to make tawbah if you realize you might have committed shirk? Okay. So I watched this show, Puella Magi Madoka Magica, where a girl becomes like a savior figure for others, sort of like a 'Messiah' idea. At the end, she saves other characters when they die from turning into monsters. She's super kind, gentle, and compassionate, and I found that really comforting. I think I have some personal struggles because I caught myself daydreaming about her coming down from the sky to comfort me. Deep down, I know she's not really God, even though the show calls her that. And I call her that sometimes too, but only because that's what she is in the story. I don't worship her, and if I ever joked about it, it was only because I knew it wasn't true. I fully understand she's fictional. It just makes me sad because I wish someone like that existed in real life. Obviously I can't get acceptance from a made-up 'god,' but I'm worried I’ve messed up my relationship with the real God, Allah. Am I a lost case? Did I commit shirk? Am I still even Muslim? What have I done! I wasn’t imagining her as a replacement for God, I think. It was just her kindness and gentleness that drew me in. But I know shirk is a huge sin. Can I even be forgiven? I want to protect myself from the punishment of the Fire, whether I committed shirk or not. One thing that made her so comforting is that she was powerful yet chose to be kind. This happened during a time when my iman was low and Allah wasn't as central in my life as He should have been. I feel terrible for neglecting the real God for an anime character-how pathetic is that? And now I might have ruined my soul just because I wanted some childish comfort. Sometimes I even wished Allah Himself would come down and comfort me the way I imagined her doing-doesn’t that mean I gave her divine attributes?! I’m so doomed, what have I done! Even if I did mess up, I want to do everything I can to avoid the Hellfire. I truly do not believe she is God and I don’t want to worship her. Oh Allah, what is this post even. I’m so sorry. I don’t even know what I’m apologizing for, but I guess it’s for being foolish, ignoring the real God, and maybe ruining my chances with Him. I feel like I’ve hurt you just by writing this. I’m still irrationally scared that I somehow saw her as God. I can feel an OCD spiral starting, and I’m terrified I’m heading for punishment. This is the one unforgivable sin, and I might have done it-how can I even be sure?! What if I live a good life from now on, but then find out I’m doomed anyway because I was so stupid? I just feel like all this could have been avoided. Allah could have given me that comfort, if only I had turned to Him first.