Eligibilty for IRA

Hello. I am retired since February 2021.  My employment prior to retirement did offer the option of a 452 or 457 account, in which I participated.  Upon retirement, they were all converted to IRAs.  I did not work again until January 2022, and then as an independent contractor.  My new position does not have the option to join in a 401K or another retirement plan.  Thus, can I contribute to an IRA for 2022, while taking RMDs from an existing IRA/457/452 account?  The 2022 Turbo Tax software says I qualify, but I just want to be sure!!! Also, can you contribute the maximum to the IRA if you earned less than the $7,000--this applies to my spouse but not me, as I earned more than that.