That's the odd thing about online dating, women are flooded with messages while men either get no messages or any responses back from their messages. I've experienced this myself just asking general questions about their life and I have seen countless other men on Reddit say similar things about receiving little to no attention in the online dating universe.
Sadly, what you say is probably mostly true that a lot of men aren't looking for a relationship and just want a hookup, but there are men out there who are genuinely interested in building a relationship for either a life partner or a family.
This is just sad and a disgrace. It's amazing how many online functions are used today as outlets to try and benefit from other people by taking their money. I haven't heard much about people dealing with this type of demand until now, but I believe it to be true as ever. Online dating is weird to me, I've tried it before and failed and felt super insecure about even trying it out in the first place for instances like this where you never know what the intention is of someone behind a screen.