Please imagine a bad doer or ill-natured person who oftentimes commits bad actions toward the people around him. E.g. backbites, gossips, lies about others, etc.
He says something bad to you and you decide to bring it up to your close friend. You say:
I think there is something wrong with his nature.
But there are barely any results on the internet for this phrase. In this link, one comment has the following:
I think McGrath admitted that ultimately one believes in Christ for existential reasons. IOW, as he said, man realizes there is something wrong with his nature, he is not as good as he ought to be, and he yearns for something better and something more fulfilling...
Since there is only one example on the internet, I think it is not common in English to say it this way. What's a more natural way of saying this?