Welcome to the limitations of the Married Filing Separately filing status ...
Modified AGI limit for Roth IRA contributions. For 2019, your Roth IRA contribution limit is reduced (phased out) in the following situations.
Your filing status is married filing jointly or qualifying widow(er) and your modified AGI is at least $193,000. You can’t make a Roth IRA contribution if your modified AGI is $203,000 or more.
Your filing status is single, head of household, or married filing separately and you didn’t live with your spouse at any time in 2019 and your modified AGI is at least $122,000. You can’t make a Roth IRA contribution if your modified AGI is $137,000 or more.
Your filing status is married filing separately, you lived with your spouse at any time during the year, and your modified AGI is more than zero. You can’t make a Roth IRA contribution if your modified AGI is $10,000 or more.
https://www.irs.gov/publications/p590a
