I think the big problem with this is that if you are over a certain age, the old days of just going out and being approached by men are probably over, or at least, you might go out clubbing and be approached by men but mostly that's not going to lead to a long-term relationship.
Second, over a certain age, men tend not to approach women as often as they are either in partnerships or married themselves, or the women are; I meet lots and lots of clever, attractive, funny men of my own age at work and out and about, but I hardly know any single ones, all my colleagues are, almost without exception, married or in a settled partnership.
When you are younger, going out and being approached worked as far more of the people were single; once you go over about 30 this is not likely to be the case.
OLD isn't perfect, but at least there's some semblance of pretending you are all single, and some of the people will want to date, even if sifting out the time-wasters, married ones and losers is a pain. Try the Burned Haystack method as it's very logical and may appeal to you, especially if you are not good at sifting out the bad ones yourself.
I also think if you are under 50 but over 30, if you live in a city, there's a lot of singles clubs, meets, supper, dinner, walking groups for single or unattached people, probably fewer over 50 but still some. I know people who met others at a walking group, running group and a choir.
It is hard OP, but it is also possible, so don't give up. Also, it's great that you feel more confident in your appearance now and that will give you a boost when you do go out and meet people in real life. You have to go to places where there are likely other single people looking for a relationship, or date online though, I think, just hoping someone is single at work or in book clubs full of women isn't enough exposure to men, you need quantity and then work your way towards quality.