Two wrongs make a right
This means to believe that it’s OK to be wrong if someone else is first. In a way this can rationalize resentment, and sometimes towards negative actions. For example, a long-term isolated person might think that it’s OK to stereotype people in relationships, give them a derogatory name (normies) and make fun of them because that is what they do to the forever alone community, but the fallacy is as it says, two wrongs don’t make a right.
LET IT GO