Sorry The first two rounds of Economic Impact Payments were advance payments of the 2020 Recovery Rebate Credit.
So if you do not qualify for the Recovery Rebate Credit because of your 2020 tax situation then you will not be able to get the missed stimulus payment.
See question 1 Eligibility
https://www.irs.gov/newsroom/recovery-rebate-credit-topic-b-eligibility
The eligibility requirements are the same for the Recovery Rebate Credit as they were for the Economic Impact Payments exceptthat the credit eligibility and the credit amount are based on your 2020 tax year information.
