While Harry was labeled the “chosen one" and often takes matters into his own hands, he wouldn't have been able to ultimately defeat Voldemort without the help of so many others. He looked to figures like Dumbledore and Sirius for guidance, was shown unconditional love and support from the Weasleys and other Order of the Phoenix members, and Harry also heavily relied on Hermione and Ron to fill in the gaps (and even destroy a few Horcruxes). Social justice and fighting for what's right doesn't take just one person alone — it's very much a group effort.