The only way to get stimulus money you were eligible for, but did not receive is to file tax returns. To get one or both of the first two stimulus payments you have to file a 2020 tax return and claim the Recovery Rebate Credit. To receive the third of the three stimulus payments you have to file a 2021 tax return and claim the Recovery Rebate Credit. You should check your account with the IRS to make sure they did not send you one or both of the stimulus payments you say you did not receive. To do so, go to IRS - Sign in to Your Online Account