Follow the majority and they will lead you astray.
Most people run on guesswork
In Makkah the believers were a small group surrounded by a large majority with old customs. Allah tells them if you obey most of those on earth, they will lead you astray. Ibn Kathir says they follow nothing but conjecture and wishful thinking, and doubt their own way.
Everyone at work rounds up their timesheets. Everyone in the family takes the loan. Everyone at the party drinks. A lot of people doing something is not proof. It is just a lot of people.
If most people do it, it cannot be that wrong.
The majority often runs on guesses. I follow what Allah made clear.
Pick one thing you do only because everyone does it. Ask honestly if Allah would approve.