John Gill Commentary Proverbs 24:19

"Fret not thyself because of evil-doers; Neither be thou envious at the wicked:" — Proverbs 24:19 (ASV)

Fret not yourself because of evil [men]
Because of their outward prosperity and worldly happiness, any more than rejoice at their adversity; neither do the one nor the other; where the one prevails, the other does also; by the frequent repetition of this advice, it looks as if this evil is what good men are prone to, and which was very common in Solomon's time, and in the time of his father David, from whom he seems to have borrowed these words, (Psalms 37:1Psalms 37:7) ; see (Proverbs 23:17) (24:1) ; neither be you envious at the wicked;
though they may stand when you fall, or be in prosperity when you are in adversity; the reasons follow.