There are lots of studies pointing both ways.
Some show low T increases cardiovascular event risk and others show TRT increases it, but usually only in the first few years. The risks are small and conflicting, so I’m betting other factors such as diet and overall health are far more important.
You go get a blood test. If it’s low and you’re showing many of the symptoms listed. It may be low testosterone.
If you’ve none of the symptoms, you’re probably within the normal range and are fine with how you’re reCting to the level of testosterone you currently produce.
If you have low testosterone, you can take testosterone to get you to where you’re feeling better.
In the oral traditions of several pre-civilisation tribes there are stories of how they had to dispose of the elderly once they became a drain on resources.
One South American tribe took the women to a river where they were killed with an axe to the head. The men were expected to leave the tribe where presumably they would die in the wilderness. The Inuit more famously left them out in the cold to die of exposure.
There clearly were a significant number of people who lived to old age, at least enough to become a burden. Not as many as now, of course, loss of eyesight and/or teeth would have hastened early death, as would lack of medical care to artificially prolong existence.
For hunter gatherers elderly women would have been very important providing childcare while everyone else hunted and gathered. Elderly men, not so useful.
However, there is evidence of other tribes who valued their elders for wisdom, experience etc. It’s not clear-cut.
One of the theories of menopause is this. So they focus on caring for grandchildren that passes on their genetic material. And take over child care duties to allow the parents to reproduce more and go do useful stuff like hunt and gather.
I remember reading about an elderly Neanderthal that was also disabled in some way who could only have survived with the support of other Neanderthals.