When a guy is ready to settle down but clearly he's not later

I would say if I ask this question early on and a guy says he wants a relationship , most of the time what it means they want to have sex.
Guys rarely look for relationship, they date to find company, sex, fun etc but relationship is not on their mind.
Your guys was honest , he said to find the right woman and in a way he is right, you date to find the right match for you and you weren’t his match.
That doesn’t mean he wasn’t attracted to you or that you are not attractive.
One rule in dating, someone’s choice says nothing about you. I am sure you met guys who were great and then suddenly weren’t , doesn’t mean there is something wrong with them, they are just not a good match to you.

If you go out a few times and they say they’re not ready for a relationship, it’s to let you down easy. I wouldn’t take that personally or get upset. The upshot of it is, they aren’t feeling it with you. It doesn’t really matter what they say. And we all tell white lies so we don’t hurt someone’s feelings. Up to half a dozen dates, I don’t feel a guy owes me an explanation. If he stops calling, I get the message and it’s not a big deal to me. In fact, I’d rather not have the awkwardness of him making up something to say about why he’s not going to call or take me out any longer. I don’t get excited or invested in someone until I determine he meets my standards and I see who and what he is over time by watching his words and deeds.

Guys aren’t stupid. Of course they’re going to say they want a relationship on their profile. Unless they are really clear about only looking for casual, which is rare. You chat a little on the site, you get together, you see what happens. Most of the time it will fizzle. Only a few get to the 3-4 month mark and then a lot of the time that fizzles too. That’s how the dance goes. When you understand that and relax, you stop getting your feelings hurt, upset, etc.