Judgment is God’s purview. He is the only omniscient One.
But if you want to take it upon yourself to judge others, just be aware that in whatever manner you judge, you will be judged in turn by the same standards. Me, I prefer to leave the judging to God. He’s just, but He’s also merciful. That is a blessing.
I’m not pronouncing judgment, that would be to render a sentence, as in “he deserves death,” or “he deserves damnation.” I’m merely identifying what kind of entity he is.