A lot depends on overall health, but by age 70, about 15% of men experience complete erectile dysfunction. About 70% will have experienced mild or moderate ED. (https://www.uwhealth.org/urology/erectile-dysfunction-ed/20537)
You posted in the Prostate Cancer forum. Have you had prostate cancer? That could certainly be a factor, or the treatment of it could be.
The meds you take have been shown to help some men with ED, but a lot depends on the cause of it. If your ED is being caused by high blood pressure or thyroid issues, it could help.
Have you spoken with your doctor about it yet? Are your blood pressure and thyroid being monitored?