Relationships, Affairs, & Everything In Between

Hi I was wondering if anyone had advice. I'm not the typical Black woman or woman in general. I was a nerd through high school and college and I worked through it all with sports and jobs so I never really dated. All of my relationships died in flames . One that hurt me in particular was a guy that I fell for hard in college and he dumped me over Christmas via text for his 40 year old fiancé. Anyway, all guys wanted were hook ups and FWBs. I did that  but I ended up becoming clingy and being dumped. Anyway, a few years ago I ended up having an affair with a cop. It was so good but I got obsessed and stressed with my job so much so that he dumped me and I got fired for not having a way to express my stress. Now I'm back to having a good job but no relationship. A guy approached me but he's married and unhappy with a kid who he adores. I tried getting in a relationship over the summer but I got dumped before he took me to Wonder Woman. So what should I do? Clearly I'm bad at relationships. Men my age want me to not be smart or workout as much or just want sex with me. Older married guys want to have affairs with me and they allow me to release my stress.