We notice flaws in others more easily than we notice flaws in ourselves.
Yes, before you see this entire article as a list of quirks that compromise how other people think, realize that you are also subject to these biases.
Bias Blind Spot
The cognitive bias of recognizing the impact of biases on the judgement of others, while failing to see the impact of biases on one’s own judgment.
Related. Introspection Illusion
A cognitive bias and form of psychological egoism that occurs when people naively expect more egocentric bias in others than actually is the case.
The human tendency to believe that we see the world around us objectively and that people who disagree with us must be uninformed, irrational, or biased.
Related. False Consensus Effect, Actor-Observer Bias, Fundamental Attribution Error, Bias Blind Spot, Ultimate Attribution Error