When someone commits suicide, it IS their choice - I think that's something everyone can agree on. However, I don't think the reasons they committed suicide should ever be overlooked. Hannah made the choice to commit suicide, yes, but while everyone on the tapes played a role in Hannah's decline, it's so clear by watching S1 that Bryce truly broke her.
The responsible one is HANNAH. But I was thinking like who did the most terrifying thing that she commited suicide. Cause then it was Bryce who was responsible for her death. But all the people from tapes were responsible