My experience in this situation is that the more you decide to the hero and take on things that everyone else is washing their hands of when you have no reason

My experience in this situation is that the more you decide to the hero and take on things that everyone else is washing their hands of when you have no reason to above anyone else, the more likely it is that you'll also be shouldered with responsibility for things going wrong that were similarly nothing to do with you in the first place. Prioritise a replacement and don't decide to try smart things with the running one.