Not being supported by the adults who pretend to be trustworthy is nearly as damaging as the bullying itself. Like you, I would be punished alongside the perpetrator even if I didn't throw a single punch or insult. This is extremely toxic because it completely breaks trust and causes children to lose faith in the system they're in, and they shut down. I know I did. I stopped telling anyone my problems because experience told me saying anything only lead to more shame.