Get a piece of string. Find a piece of cardboard and a sharpie. Attach piece of string to top corners of cardboard. Write on cardboard "Will cook for childless husband". Hang cardboard around your neck. Sit on the floor in a busy shopping street.
Or use google to find dating sites. That's a lot easier.
Get online or tinder. okcupid is the most honest and free IMHO. I date younger now cause surprisingly 20's crowd are more open bout not wanting kids as they are not shamed like our generation and the ones before.
That's going to be really hard. Try a dating site, otherwise, I don't know what to tell you. That's not really a good deal breaker for someone your age. If he's a father, that doesn't mean he can't find room for yo in his life.