So, if you want to meet someone organically and not through the apps - it's tough, and not something that has occurred much in my post-divorce life, but I do have a few observations:

The first time I was DBing my marriage when my husband had his affair, I was focusing on keeping a positive mental attitude (and, frankly, kind of thinking "F-him, I'm a RAY OF SUNSHINE). I never ever flirted with other men during my marriage, but during that time of crisis in my marriage, I did start to notice other men, rather than them just being invisible to me. And something about that combination of my sassy mindset and me actually SEEING them, led to an unusual surge in men flirting with me. I was in my mid-forties then, but college students would see me walking by and invite me to their parties. Men would talk to me in the grocery store. Strange men would compliment me in public. And the weird thing about it is, this seldom happened to me in my 20's when I was thinner and arguably prettier.

Something about being comfortable in my own skin, and actually opening my eyes to see the men around me, led to this unusual change.

Now to be fair, I've mostly reverted to my usual "oblivious to my environment" default setting when I'm out shopping etc, so this seldom happened in my post-divorce days. But perhaps if you start looking around more when you are shopping, at the gym, etc., and saying hi to people or starting conversations - while OWNING and being comfortable in your own skin - well, that seems to be an attractive quality.