Your Lord knows best who strays and who is guided.
Leave the final sorting to Him
Right after warning against following the guessing majority, Allah adds that He knows best who goes astray and who is guided. Ibn Kathir says each one is made easy for what they were created for. The believers did not need to sort the people of Makkah themselves.
You see someone without hijab at the mosque, or a bearded man cutting in line, and your mind ranks them instantly. You have no access to their heart. Allah knows who is guided. Your job is your own path.
I can tell who is really guided by how they look.
Only my Lord knows who is truly guided. I focus on my own way.
Catch yourself judging someone's faith today. Replace the thought with a short dua for them.