IRS website for federal tax refund FAQ's - https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions
Why is my refund different than the amount on the tax return I filed? (updated 2/5/2021)
All or part of your refund, including any amount for the Recovery Rebate Credit, may have been used (offset) to pay off past-due federal tax, state income tax, state unemployment compensation debts, child support, spousal support, or other federal nontax debts, such as student loans. To find out if you may have an offset or if you have questions about an offset, contact the agency to which you owe the debt.
We also may have changed your refund amount because we made changes to your tax return. This may include corrections to any incorrect Recovery Rebate Credit amount. You’ll get a notice explaining the changes. Where’s My Refund? will reflect the reasons for the refund offset when it relates to a change in your tax return.
Tax Topic 203, Refund Offsets for Unpaid Child Support, Certain Federal and State Debts, and Unemplo... has more information about refund offsets.
i dod not owe any other money. you made a mistake, so you need to fix this problem
Your tax return is self-prepared so if anything needs to be fixed only you can do that by amending the tax return.
Have you received a letter or notice from the IRS in the mail or are you only looking on the IRS federal tax refund status website?
When you receive the letter or notice from the IRS contact the TurboTax Audit Support Center for assistance in understanding what the IRS changed on your tax return - https://support.turbotax.intuit.com/irs-notice/audit-support/