If you have negative thoughts or suicidal feelings, resources are available to help. In the US, call the Suicide and Crisis Lifeline at 988; in the UK, call the Samaritans at 116 123; and in Australia ...
One unexpected symptom of depression in older adults that many often miss is fatigue. "A person who is depressed does not have a lot of mental energy. Often, they lack motivation and don't sleep well.