At 57 years, how can I go on?

I was in a 23 year abusive marriage to an alcoholic. Soon after that, I fell deeply in love with an also divorced man who has so much family issues and baggage that he cannot give me the attention I crave. I feel suffocated and alone and I don't know where to turn. My friends are all married, I am literally the only single one of everyone I know. To make it worse, a co-worker made the comment that people who are married are better people than those who are not. I feel so out of place and I don't know how to fix things. I have attempted online dating but those men also have many issues or only want a bed partner. I feel like this part of my life has come to an end.