loss carryover did not show up on return for 2024. line 16 is greater than line 21 from last years return but did not pull into this years return. how do i manually enter

For a capital loss carryover -

Click on Federal Taxes (Personal using Home and Business)
Click on Wages and Income (Personal Income using Home and Business)
Click on I'll choose what I work on (if shown)
Under Investment Income
On Capital Loss Carryover, click the start or update button