Well, I am in my 40s, so things are a little different for me. That seems to be the cutting off point for a lot of men. Men in their 30s, 40s, and even 50s will date (and marry) a woman in her 30s. But those same men aren’t interested in a woman over 40. If you aren’t yet 30 (still in your 20s), I wouldn’t let youth scare or upset you too much. You have time. And not rushing into something early on seems to be linked to a happier marriage when you find someone. So this could be a good thing for you.
And like I said, even with my terrible luck, I eventually found someone and he’s a very good and kind man (just not Catholic… yet, like I said, he seems interested). I hate to say it, but I think that’s what helped. I found it harder to find a Catholic man as their requirement for youth seemed to be more important than to more secular men. And I think the desire for children/the fact that men have a bigger window of opportunity to have children is why.