You are mixing up your W-2 and your W-4.
Your W-2 is the form that your employer gives you at the end of the year showing how much you made and how much tax was withheld. You use your W-2 when you file your tax return.
Your W-4 is the form that you give to your employer with information that the employer uses to calculate how much tax to withhold from your pay during the year. You fill out the W-4 and give it your employer.
You don't change your W-2. You can change your W-4 by filling out a new one and giving it to your employer. If you got married in 2024, that doesn't change anything on your 2023 W-2.
Make sure your employer has your correct name and current address in their payroll and personnel records. That does not come from the W-2 or the W-4. Ask the payroll department and the HR department how to update your name and address.
