Is the barber sinful when a customer asks him to shave the beard and do some trendy haircuts? Yes.

And do not help one another in sin and transgression.

And if this person is like that, he should look for another job.

But we do not say to him now, leave and go, ask people, even search for another job, we say no.

Fear Allah, stay in your job, fear Allah and look for another job.

Seriously look for another job until Allah, the Exalted, enriches you from His bounty, and do not commit disobedience to Allah, Verheven en Hoog is Hij.