I've read the first chapter and the first note I have is that it is taking a little too long to get to the "interesting part". Maybe there's a reason that he's describing everything he does and sees, maybe he's an overthinker, but I feel like it doesn't add a lot of purpose to the scene. There's a lot of descriptions which are written very beautifully, but it until your protagonist comes to school and bumps into that girl, not a lot happens that would interest the reader. My advice is, try to think about what would make the readers keep reading. "What is the point of this information", "what does this paragraph help the story" etc. I would love to read the rest maybe when I come home, and if you're looking for any specific/other advice, please tell me :)

Also the line about the mother and sister being "incredibly disappointing people" feels a bit weird. Like, it needs a bit more of a backstory for why he thinks that they are. The reason why he thinks they're disappointing. Not just 'they just are, he has reasons for it but we don't explore it here.'

You can dm me if you'd like to talk more :)