How To Change Passenger Name On United Ticket?

Hello flyers, I recently booked a flight ticket with United Airlines. When I checked my name on the ticket, it showed a correction. To correct it, I visit the official website and look for a solution. But the details mentioned there are a bit complicated. Now, with only a few days before my flight, the correction to my ticket still needs to be made. Does anyone know how to correct or change a passenger name United ticket? Any information could be helpful for me.