You are confusing "total depravity" with "utter depravity". The latter is not the same as the former. Scripture does not teach we are utterly depraved, only totally depraved. We are not as evil as we could possibly be, especially given the restraing grace of God, else the streets woud run with blood.
Good insights from MacArthur:
Furthermore, because of human depravity, there is nothing in a fallen, reprobate sinner that desires God or is capable of responding in faith.
MacArthur, John (2005-03-08). The Gospel According to the Apostles (p. 44).
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Unregenerate sinners have no life by which they can respond to spiritual stimuli.No amount of love, beseeching, or spiritual truth can summon a response. People apart from God are the ungrateful dead, spiritual zombies, death-walkers, unable even to understand the gravity of their situation. They are lifeless. They may go through the motions of life, but they do not possess it. They are dead even while they live (cf. 1 Tim. 5:6).
MacArthur, John (2005-03-08). The Gospel According to the Apostles (p. 47).
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Total depravity does not mean that every person’s lifestyle is equally corrupt and wicked, or that sinners are always as bad as they can be. It means that mankind is corrupt in every regard. The unredeemed are depraved in their minds, their hearts, their wills, their emotions, and their physical beings. They are utterly incapable of anything but sin. Even if they perform humanitarian, philanthropic, or religious deeds, they do them for their own glory, not God’s (cf. 1 Cor. 10:31). Sinners may not always sin as grotesquely as possible, but they cannot do anything to please God or earn His favor. Sin has tainted every aspect of their being. That is what it means to be spiritually dead.
MacArthur, John (2005-03-08). The Gospel According to the Apostles (pp. 47-48).
The point being, the totally depraved can only sin more or sin less. While he or she may perform acts that are perceived as good in society's eyes, such as giving to the poor, working at soup kitchens, etc., they perform these acts for their own glory and not God's, hence they sin with every breath they take.
AMR