Being past my best looks wise (I'm healthy, slim, not grotesque but not my best)
I do believe we have auras that we self-consciously project. Right now you are being so down on yourself and a bit of a downer (don't get me wrong it is totally understandable, but it doesn't help) that decent available men will just not even take notice.
So you're not in your fresh, vibrant looks phrase anymore.
Well neither are the men. And when you reach a certain age looks are no longer be all anyway, well it shouldn't be. Those hot looks in youth, coupled with a lack of life experience draw to us a lot of insincere men who can exploit us.
I draw a lot and so I observe people in life and whilst out and about, and it's interesting to me that you have women who are radiant and pulling attention from men all their lives and some women who don't. What is the difference? I've speculated on this and I think it's that those women never think of themselves as old and they work on projecting positive energy. I do not mean the toxic positivity type of energy, I mean the grateful to be alive type. And if you have your health whilst being an older woman, that is something to be very grateful for also. I was chronically ill in my 30s and never achieved that 40s best years thing. You say you are healthy and fit. Get out and about and talk, especially to the opposite sex. A lot of women are very bad at it for societal reasons and of course the risks of attracting bad attention, but join clubs, also activities that you wouldn't normally do so you can diversify your pool and talk to male acquaintances.
If you can overcome the downsides of being lonely and project happiness in your own skin, try new things, project a spirit of gratitude, make yourself open and approachable, you will meet men. Trust me.
It works for me and I'm not even interested due to my health.