I don't know who told you that but they were incorrect.
Only Traditional IRA contributions can be deductible, but if you ware age 70 1/2 or older in 2019 then you are probated from contributing to a Traditional IRA at all. You could contribute to a Roth IRA but that is NOT deductible.
(Note that for 2020 and later contributions the 70 1/2 age limit has been eliminated for contributions but if you own a Traditional IRA then you must take a yearly RMD (Required Minimum Distribution).
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**