#1 If your extension payment did not automatically show up on your 1040 or state return you need to enter it. So make sure it's not already there before you enter it!
For 2022 Federal Extension payments should be on schedule 3 line 10. And go to 1040 line 31.
You can type estimates paid in the search box at the top of your return and click Find and it will give you a link to Jump To the screen where you enter Extension Payments.
To enter the amount you paid with an extension (including state extension) go to
Federal Taxes (or Personal for desktop H&B version)
Deductions and Credits
Then scroll way down to Estimates and Other Taxes Paid
Other Income Taxes - Click the Start or Update button
Next page second section Payments with Extension
Either Visit All or Click Start or Update by the extension you paid
#2 It could be that the Standard Deduction is still more than all your itemized deductions.
Or maybe you are already getting back all that you can and more deductions won't increase it.
Itemized Deductions or the Standard Deduction can only reduce your income to zero and not create a refund. Then you only get back any withholding taken out.
And by increasing your deductions it will decease your income and you may not be getting as many credits as before. Also after you reduce your income to zero there is no more refund to get back but you still may owe for other things like self employment tax or the 10% early withdrawal penalty from 401k or IRA accounts.
