I am not a tax professional.
If you didn't have any state income tax withheld or paid, or if it would be less than the state sales tax, TT might have used your standard (not specific) state sales tax which is calculated based on your state, your county, your city if any, sales tax rates and your AGI. It is an alternative tax to state income tax. TT will use the bigger number of income tax and sales tax. To check which was used, go to schedule A in TT forms view and see if the box was checked for sales tax under 5a.
Another possibility concerns taxes other than withholding that were paid in 2021 and are found on the Schedule A State and Local taxes paid worksheet, there are many of them, you can see what TT used to get your state taxes paid. If you click on the state taxes withheld on this worksheet you will be able to drill down and see where it got the number if that is what you don't agree with. Hope this helps.
