Hi Margaret
Welcome to NeuroTalk

.
I am sorry to read about your experience with ECT.
I am in remission from Major Depressive Disorder and used to go to a weekly therapy group for people with mood disorders.
Another member of the group, with treatment-resistant depression, reported that she had found Transcranial Magnetic Stimulation (TMS) very effective for her.
TMS is an option which might be worth investigating.
Best wishes.