Since you had a 401K anytime in 2021 then even that you can make a full IRA contribution the amount you can deduct on the return MAY be limited.
See these IRS IRA deduction limit charts.
If *you* are covered by a retirement plan:
https://www.irs.gov/Retirement-Plans/2015-IRA-Deduction-Limits-Effect-of-Modified-AGI-on-Deduction-i...
If you are *not* covered but your spouse is:
https://www.irs.gov/Retirement-Plans/2015-IRA-Deduction-Limits-Effect-of-Modified-AGI-on-Deduction-i...
