You are not considered having a pension plan since you are not contributing to it but your limitation is your AGI.
Your eligibility to contribute to a Roth IRA is based on your income level. If you file taxes as a single person, your Modified Adjusted Gross Income (MAGI) must be under $139,000 for the tax year 2020 and under $140,000 for the tax year 2021 to contribute to a Roth IRA, and if you're married and file jointly, your MAGI must be under $206,000 for the tax year 2020
