Abraham was so disturbed and he asked to God in Genesis 18:25 “Far be it from you to do such a thing—to kill the righteous with the wicked, treating the righteous and the wicked alike. Far be it from you! Will not the Judge of all the earth do right?” He was vocal for the people.
As this conversation continued, Abraham proposed, and God agreed to allow for 30, 20, 10 in succession, until Abraham finally gave up probably because 10 innocents could not be found in those evil towns. Had Sodom and Gomorrah had ten righteous individuals, the towns would have been spared. Unfortunately, ten innocent people could not be found in the entire city of Sodom, and it was destroyed (Genesis 18: 23-33).
Abraham had divine gift to convince and influence others. He was an inspirational leader for his followers and God assured him in Genesis 12:3 “I will bless those who bless you, and whoever curses you I will curse; and all peoples on earth will be blessed through