Struggling as a single woman in her early 30s.

I'm 32 and my boyfriend and I broke up earlier this year. The relationship didn't feel like it was working or progressing at the time, but I often wonder if I should have tried harder or done something different. Now I'm a single 30 something woman. I see the early signs of aging and wonder what kind of man would be interested in me. I worry I'm too old, that men who want kids will view me as too old or that I've lost my chance to have kids with a loving partner altogether. This is compounded by the fact that I know my ex (who is 38) won't date women over 35 because he wants kids. I wonder if I should have forced the last relationship to work - it wasn't bad but also wasn't great. Maybe I could have done something differently to have made it work. Now I'm alone and worried I missed my chance.