I never received my first stimulus check, because I had accidentally put that I was able to be claimed as a dependent. I corrected my tax information and sent it to the IRS and never received it eithe

If you cannot be claimed as a dependent for 2020 you will be able to get your stimulus payment as a credit on your 2020 tax return. This applies to both the first and second stimulus payments.

You didn't need to amend 2019.  That's in the past.  The first Stimulus Check is really based on your 2020 return we are filing in 2021.  So any amount you already got will be reconciled on your 2020 return line 30.  If you didn't get a Stimulus Check (and qualify) or you qualify for more it will be added to your 2020 return.  But the good news is if they paid you too much they won't take it back.

When you go through the federal review tab it will ask how much you got if any.  Or to enter your stimulus payment in TurboTax, type "stimulus" (without the quotes) in the Search box, then click the link that says "Jump to stimulus."