One thing I noticed about them is that none of them were all that smart, yet, paradoxically, they were arrogant. They thought they were smarter than others, that they could get away with anything, and they would never get caught.
I knew one guy who thought he could consistently rip off people on drug deals. Stupid? Yes. Also arrogant. He ended up dead and dumped in the stockyards in hope the pigs would eat him and leave no evidence.
Another thought he could go after any women who took his fancy. He ended up blown off his Harley. The shooter got life in prison.
I've seen this stupidity and arrogance over and over and over. The ancient Greeks called it hubris and the Bible refers to it as Pride. Hubris as in "followed by Nemesis." The same applies to that Biblical Pride.
All of these guys, to use Manosphere terms, were "insanely confident." Notice the "insanely" part. That's what they were. Insane - and now dead or in prison.
The opposite of that Hubris/Pride is humility, as the Greek concept of Sophrosyne, which means to know your strengths and weaknesses. Because, after all, no one is perfect. In fact, not even close, for all of us.