You may still have a couple options left, even if you have been declined by other carriers.
You may be able to be added to the group life insurance plan provided by your employer.
Another option may be Guaranteed Issue life insurance which offers coverage to anyone who meets the age requirements for acceptance.
Several insurers offer guaranteed policies, including United of Omaha, MetLife, AIG, and Colonial Penn, among others.
Age requirements for approval will vary by insurance company.
However, United of Omaha offers guaranteed coverage for people ages 45 to 85.