In my most humble opinion, you don’t need to put a name on what you’re feeling. Sometimes there’s a huge mix of emotions contradicting themselves but you still feel them all at the same time. These last few chapters made us understand and empathize with one side of the story (the father), but since you have seen the other side (single parents) you might be feeling conflicted for feeling empathy for the one who left, and it’s totally ok and valid. But in this case rather than focusing so much on the real world experience, it’d be very useful to focus on the story in order to enjoy it.
So yeah TLDR: you don’t need to label your feelings, and it’ll be a bit easier to enjoy the story if you follow it without thinking of real life experiences

I do understand his story and it sad I cry didn't think I would but I did but still don't know it might not be that deep but as someone who understands and see what it like to be a single parent and the struggles thinking about why they left without saying anything thinking it might have been your fault they left and your child asking about they other parent you don't know how to answer