Verb
fight the good fight (third-person singular simple present fights the good fight, present participle fighting the good fight, simple past and past participle fought the good fight)
To battle or try to achieve something for a noble cause.
However, those on the left saw not anger or confusion but again someone ready to roll up his sleeves and fight the good fight. Source: Internet
The Hulk continued to fight the good fight until Avengers: Infinity War in 2018, when an unsettling encounter caused Hulk to take a backseat to his human alter ego. Source: Internet
We will fight the good fight another day.” Source: Internet