Apparently you are married filing jointly and it is your spouse who is covered by a workplace retirement plan, not you. In the absence of any taxable income from Roth conversions in 2021, the MAGI limit for deductibility of a traditional IRA contribution is the same as for eligibility to contribute to a Roth IRA. This means that the amount that you were eligible to contribute to a Roth IRA for 2021 is the same as the amount of traditional IRA contribution for which you were eligible to receive a deduction. So you do have only a $4,060 excess Roth IRA contribution, not a $5,030 excess contribution.
