I'm sorry you've had to go through this disappointment from him - it sounds very much as though he was using dating/the apps to fill a hole in his life, probably loneliness. I think the apps are chock-full of people who think they're ready, get "lost in the sauce" of it all with masses of intense messaging, hours of daily calls etc, but when the reality of it all sinks in, and they have to actually show up to something resembling the early stage of dating or a relationship, they realise they're not ready and can't do it.
I know it won't be much consolation but please know it really is not you, and nothing you could have done would have made him more ready, more into it, etc. It is so hard when we have these first brushes with feelings, let down and disappointment when we start putting ourselves out there, but we do learn each time and get better at spotting the signs early on.
I had an iron who was like this, totally not ready for a relationship despite telling me he was (they ALWAYS say they are), and we ended after a few months when it really became clear he could not maintain the declarations and actually show up properly. After a period of no contact, we're now friends, and he shares his dating stories with me - and I can see clearly that 18 months later, he's STILL not ready, not emotionally available, and is going through the same cycle with other people.
You WILL meet better people, people who actually are emotionally available and who show you that not by telling you they are, but with their actions.