Word by Word Analysis

أَفَمَن زُيِّنَ لَهُۥ سُوٓءُ عَمَلِهِۦ فَرَءَاهُ حَسَنًا ۖ فَإِنَّ ٱللَّهَ يُضِلُّ مَن يَشَآءُ وَيَهْدِى مَن يَشَآءُ ۖ فَلَا تَذْهَبْ نَفْسُكَ عَلَيْهِمْ حَسَرَٰتٍ ۚ إِنَّ ٱللَّهَ عَلِيمٌۢ بِمَا يَصْنَعُونَ 8

Then is one to whom the evil of his deed has been made attractive so he considers it good [like one rightly guided]? For indeed, Allāh sends astray whom He wills and guides whom He wills. So do not let yourself perish over them in regret. Indeed, Allāh is Knowing of what they do.