No, you shouldn't need those if you are a regular employee and receive a W2 unless you have regular income that is not reported on a W2 form (Ex. 1099-MISC from self-employment or other self-employment income). If you need to adjust your withholding for taxes, you can do that by updating your W4 form with your employer to withhold additional taxes or even adjust them for less withholding if you have room to adjust withholding and keep more of your pay from paycheck to paycheck without owing taxes at tax time.
Unless your tax situation is going to change for 2021, you most likely do not need to adjust anything as long as you have regularly been receiving a refund at tax time. You can always use a tool like the IRS withholding calculator to help make sure that your withholding from your employer(s) will cover your tax liability at tax time.
https://www.irs.gov/payments/tax-withholding
TurboTax also has several tax tools to help you with tax calculations, including withholding:
https://turbotax.intuit.com/tax-tools/
